Not all these cases are going to be equal. Some are going to be dismissed IMO and some are going to be more serious. Do you consider it just harassment if he going to these "massages" and finds ways to rub his dick against them or place their hands on his dick and anus? Or is that abuse?Some of these cases sound like sexual harrassment not sexual abuse. You can still sue for that. I don't think a smart attorney for Watson would want to see 20 something cases in front of a jury. Evidence is going to authorities for possible criminal prosecution.
If the DA takes the case, all Jane Doe's attorney needs to do is sit back and wait.