A former NSW Liberal staffer says her request for an internal investigation into an alleged sexual assault by a fellow Liberal went nowhere.

Key points: Dhanya Mani said she raised her complaint with Liberal Party NSW director Chris Stone

Dhanya Mani said she raised her complaint with Liberal Party NSW director Chris Stone She said she received no further action or response despite follow-ups

She said she received no further action or response despite follow-ups Yesterday Ms Mani and another former Liberal staffer, Chelsey Potter, told the Nine Network they were sexually assaulted by colleagues

Dhanya Mani was one of two women who yesterday told the Nine Network they were sexually assaulted while working in the Liberal Party.

She said that in 2015 a Liberal staffer forced himself onto her in her home.

Ms Mani claims she met directly with Liberal Party NSW director Chris Stone last December and told him what happened to her after exhausting other avenues within the party to have her allegations investigated confidentially.

"We met in person and I made a formal complaint," Ms Mani told the ABC.

"He was sympathetic during the meeting and suggested to me that he would look into the matter further and attempt to assist me."

She also raised with Mr Stone that she had been lobbying for better sexual harassment policy and training and told him it was one of the main reasons she was coming forward with the allegations.

Ms Mani said he was "broadly supportive" of her objectives, but made it clear there were no provisions within the Liberal constitution to deal with her complaint in a way she wanted it to be resolved.

Then, after the meeting "nothing happened".

"I received no further action or response in spite of multiple attempts to follow up," she said.

Mr Stone, who is overseas, said Ms Mani had not lodged a formal complaint to his office.

"When Ms Mani approached the State Director with a serious allegation, she was offered support and was encouraged to notify the appropriate authorities about it," a spokesman said.

"In her meeting with the State Director she did not make a formal complaint or asked for it to be investigated.

"The Party takes such allegations incredibly seriously — harassment and assault are completely unacceptable."

Ms Mani, however, refuted the statement and said she made had made it clear the purpose of their meeting was so a complaint could be formally lodged.

Liberal elder Arthur Sinodinos, a senator set to retire from politics to become Australia's ambassador to the United States, said the women had not received the support they deserved following the alleged incidents.

He said he wanted the Liberals to expedite a review being carried out into broader allegations about bullying and the culture of the party.

"The review was commissioned after the matters of August last year, so it has been going a while now and I can understand that we've had state elections, federal elections, getting in the way," he said.

"But the reality is that this is a priority and should be treated as a priority and finalised as a priority."

Staffer warned she 'wouldn't be believed'

Ms Mani was formerly a Young Liberal member in the division of Miranda, which covers Sutherland Shire, and a former staffer to the NSW Parliamentary Speaker.

She first went public with the allegations in an online article for Women's Agenda in March, a day after the NSW state election.

Yesterday she joined another former Liberal staffer and alleged victim of sexual assault, Chelsey Potter, in calling for an end to a toxic Liberal Party culture and for greater transparency in the party's complaints process.

Former Liberal staffer Chelsey Potter says she was also sexually assaulted by another staffer. ( Supplied: LinkedIn )

Ms Mani said she was left traumatised after her alleged assault.

"I just became frozen. I couldn't move or speak anymore," she said.

"He at one point had his hands around my neck and he was just choking me and I just have never felt more powerless."

Ms Mani did not go to police but instead searched for internal resolutions for sexual assault and harassment and was dismayed to find none existed for her.

When she sought advice from other senior Liberal staffers, Ms Mani claims she was warned she "wouldn't be believed" and risked being "slut shamed".

Ms Potter released a statement on Wednesday afternoon which said she was "humbled and heartened by the strong supportive response" to her story and urged more leadership on the issue.

"We want to encourage young people, particularly young women, to enter politics, work for the Australian Parliament and be active in political life," she said.

"I urge women from all side of politics to speak out, if they're able."

But federal Liberal vice-president Karina Okotel told Sky News that police were best placed to handle the allegations against the staffers.

"It's not enough that it just be dealt with by an internal process," she said.

"In fact, I would say that's sweeping it under the carpet, to just hush it up and not let the appropriate authorities, who are the police, to deal with allegations of sexual assault."

The Morrison Government said allegations a woman was sexually assaulted while working for a senior Coalition minister were "deeply concerning and distressing".