So my female friend has been telling me she's been grabbed a few times this week, she just started at this pretty legit BJJ place. Personally I've never had a problem with this stuff. She recently even got the poon grabbed while in north/south with this guy. Another time a different guy had backmount, went for a collar grip, and accidently went under the bra and got a nipple. The guys were blue/white belts. Just sharing, thoughts?