Full article doesn't go into specifics regarding her motivation for filing the false report, beyond some kind of disagreement with (gender-neutral language) "her partner". Been seeing a lot of cases like this in the news lately. There was a woman down in Florida convicted of perjury after the man she falsely accused had been in prison for 3 years. Judge gave her a 1 year suspended sentence. That's the world we live in.
Every time someone makes a false report like this, it does two things.
A) Undermines the credibility of anyone who tries to bring police attention to an actual sexual assault
B) Takes police and health service resources away from victims who actually need it
Just plain sick.