ALBANY — The woman who put up three huge billboards targeting a teacher she accuses of raping her 20 years ago now plans to fly her message above her alma matter and the state Capitol on Friday.

Kat Sullivan, an Emma Willard School alum, was invited to the 20th year reunion at her elite all-girls’ high school this weekend but she has other things in mind: blasting the school for inviting the administrators she says kicked her out after she reported that a teacher bound and raped her.

“Emma Willard School is hosting my 20th high school reunion this weekend,” she said. “Three of the four administrators I told about my rape in 1998 will be at the 2018 reunion and we have learned that they attended the 2017 reunion as well.”

Sullivan, now 38, blasted the school before. After seeing the movie “Three Billboards” and decided to erect three of her own highway signs earlier this year. The drama, starring Frances McDormand, is about a mom who puts up billboards pressing authorities to solve her daughter’s murder.

Sullivan’s billboards were across the river from her old boarding school in Troy, NY., where she says she was traumatized, and one each in Fairfield, Connecticut, and Springfield, Massachusetts.

Now she’s booked a plane to fly over the Capitol on Friday, where lawmakers have balked at a bill that would extend the time victims can sue institutions that protect serial abusers.

In New York state, sex abuse victims have until the age of 23 to press criminal charges or bring a civil action against their alleged abusers.

“In New York state, the civil law on this is the same statute of limitations as for a slip-and-fall case,” she said.

The Child Victims Act would extend the statute of limitations to age 28 in criminal cases and age 50 in civil cases. The act would also create a one-year “look-back” window to allow victims of any age to bring their abusers to court.

While the Assembly passed the bill, the Senate has proposed legislation that would create a fund to help victims but not provide a “one-year lookback” to sue institutions like Emma Willard School.

She’s got three days left to convince the Senate to act.

“Any act of sexual abuse against a child is horrific, which is why year after year, the Senate Republican Majority proactively takes steps to protect children from predators and these measures simply die in the Assembly,” said Senate GOP spokeswoman Candice Giove. “The Majority is reviewing a number of bills that extend the age limit in which victims of child abuse can bring complaints.”

Giove would not say specifically whether the Senate is reconsidering provisions that would expand accountability for institutions, as Sullivan and other victims have requested.

The school did not return a call for comment.