Your “rarely” seems to be contradicted by the statistics:

When methodologically rigorous research is conducted based on this definition, estimates for the percentage of false reports converge around 2-8%.

• For example, Dr. David Lisak and colleagues analyzed sexual assaults reported to a major Northeastern university over a 10-year period to determine the rate of false reporting. Of the 136 reports taken during that period of time, 8 reports, or 5.9% were found to be false (Lisak, Gardinier, Nicksa, & Cote, 2010).

• In a study of sexual assault cases reported to the Los Angeles Police Department in 2008, researchers found that rate of false reports was 4.5% (Spohn, White, & Tellis, 2014).

• In a multi-site study of 8 US communities involved in the “Making a Difference” (MAD) Project conducted by EVAWI, data were collected by law enforcement agencies for all sexual assault reports received in an 18-24 month period. Of the 2,059 cases that were included in the study, 140 (7%) were classified as false.

• Statistics even appear to converge internationally. In an analysis of 2,643 sexual assault cases reported to British police, 8% were classified by the police department as false reports. Yet when researchers applied the official criteria for establishing a false allegation, this figure dropped to 2%. These criteria specified that there must be either “a clear and credible admission by the complainant” or “strong evidential grounds” (Kelly, Lovett, & Regan, 2005).

Source: https://evawintl.org/best_practice_faqs/false-reports-percentage/

So if anything, instead of trying to discredit her or mob-downvote every comment mentioning her story to bury her voice, you might probably want to reweight the odds and start to consider the fact that it’s highly likely she’s not lying.