Dunno what law school you went to man, but perjury is the offence of lying under oath, ie: you have to be in court, sworn in, giving evidence under oath...If her statement are found to be misleading or untrue, she can be charged with perjury. I’m guessing he has some high class lawyers on his case in which case if she is full of shit they shouldn’t have to much trouble in bringing that to light. The court also don’t want people making dodgy statements which accuse people of significant crimes. Judges especially come down hard on people that are financially motivated
There are various offences for making false complaints and false statements but they aren’t perjury.