Rona Ambrose was vacationing in the Caribbean on a billionaire’s yacht while her colleagues back in Canada were attacking Prime Minister Justin Trudeau for his holiday trip to the Aga Khan’s private Caribbean island, iPolitics has learned.

Ambrose and her partner, businessman J.P. Veitch, spent Jan. 3-14 on the yacht of energy mogul and Calgary Flames co-owner Murray Edwards in the azure waters around the islands of St. Barths and Saint Martin, part of the Leeward Islands chain.

Ambrose’s director of communications, Mike Storeshaw, said in an email Friday that unlike the prime minister, Ms. Ambrose’s trip didn’t break any rules.

“Ms. Ambrose has followed all rules that apply to her with respect to her holiday, and was open and transparent with the Conflict of Interest and Ethics Commissioner, unlike the Prime Minister,” Storeshaw wrote.

“Ms. Ambrose paid for a flight on a charter to the holiday destination along with a number of friends, none of whom are public office holders. Ms. Ambrose discussed her holiday with the Office of the Conflict of Interest and Ethics Commissioner, who verified that it was within the rules.”

On Jan. 6, while Ambrose was on Edwards’ yacht, the National Post reported that Trudeau had vacationed on the Aga Khan’s island in the Bahamas weeks before.

Conservatives denounced Trudeau, demanded explanations, and wrote letters asking for officials to investigate.

On January 8, Conservative MP and leadership candidate Andrew Scheer asked Ethics Commissioner Mary Dawson to investigate whether Trudeau’s vacation was a gift that would violate the Conflict of Interest Act.

“Section 14.1 of the Conflict of Interest Act is very clear,” Scheer wrote.

“Neither a Member nor any member of a Member’s family shall accept, directly or indirectly, any gift or other benefit, except compensation authorized by law, that might reasonably be seen to have been given to influence the Member in the exercise of a duty or function of his or her office.”

On January 11, Ambrose, or more likely a staffer, since she was on a yacht, tweeted a letter Conservative MP and ethics critic Blaine Calkins sent to the ethics commissioner.

My colleague @blainecalkinsmp just sent this letter to the Ethics Commissioner about Justin Trudeau’s latest ethics mess. pic.twitter.com/Lm2P8ukTSr — Rona Ambrose (@RonaAmbrose) January 12, 2017

On Jan. 12, Ambrose tweeted: “Justin Trudeau knew what he did was against the law. All he had to do was say no, but he couldn’t resist the billionaire lifestyle.”

Justin Trudeau knew what he did was against the law. All he had to do was say no, but he couldn’t resist the billionaire lifestyle. https://t.co/sQ3WcxzEL0 — Rona Ambrose (@RonaAmbrose) January 12, 2017

The same morning, she sent a letter to Lyne Salloum, a compliance officer in the ethics Commissioner’s office, to check that her holiday was within the rules.

“I have two questions: 1) over the holidays we stayed with a friend of my partner, JP Veitch, to visit. Ms. Legare and Mr. Edwards have been friends of my partners for 33 years and past co-workers. Do I need to price out a equivalent hotel cost and reimburse them?” she wrote.

Salloum replied within an hour.

“Under the MP code, only gifts/benefits related to your MP role require reporting; accordingly, no public disclosure would be required for staying at your partner’s friends home.”

A spokeswoman for Dawson said in an email Friday that the office couldn’t comment on the matter.

“For reasons of confidentiality, we cannot answer your question, as we do not discuss any dealings that our Office may have with individual Members of the House of Commons or public office holders,” said Margot Booth.

Dawson is investigating Trudeau’s trip to the Aga Khan’s island.

Liberal MP Seamus O’Regan, Liberal Party President Anna Gainey, and their spouses joined Trudeau on Bell Island in the Caribbean as guests of the billionaire spiritual leader of the Ismaili Muslims just after Christmas.

They got to the island using the Aga Khan’s private helicopter.

At the Conservative caucus meeting last week in Quebec City, Ambrose said Trudeau thought ethics rules don’t “apply to wealthy, well-connected people like him.”

“Working Canadians can’t take much more. It’s time for Justin Trudeau to change his priorities. The fun is over,” she said.

As the House of Commons returned this week, she and other Conservative MPs continued to grill the prime minister on his possibly illegal New Year’s vacation at the Aga Khan’s private island in the Bahamas.

Ethics Commissioner Mary Dawson is investigating whether the prime minister’s vacation and helicopter ride violated the Conflict of Interest Act.

With an estimated net worth of $2.69 billion, Canadian Business magazine named Murray Edwards the 30th richest person in Canada in 2015.

A member of the Order of Canada, Edwards is also a major shareholder of Magellan Aerospace Corp., Imperial Metals Corp. and Resorts of the Canadian Rockies, according to a Globe and Mail article from May 2016.

Last winter, Edwards made a heavily scrutinized decision to move from Calgary to London, England, which he told the Globe was based on “personal circumstances” he didn’t want go into.

The Daily Mail reported in September 2014 that Edwards’ wife, Heather, from whom he is separated, was dating the musician k.d. Lang.

But the Financial Post‘s Kevin Libin, citing separate “sources in the know”, wrote that Edwards’ move had more to do with income tax increases in Alberta and the federal level.

Edwards did not respond to a request for comment on Friday.