If she was commenting about his age and lack of experience, that sounds like complaining about performance to me.
And for the record, I'm not saying she should be in Voro fucking him if she really doesn't want to. If the sex was bad and she's turned off by it, then so be it. The only issue is how she's dealing with it; running to everybody acting mad and bratty for no reason. All she has to do is tell the guy, she doesn't want to have sex and that's the end of that. No, instead she runs to Jacky and complains, then she runs to Christy and complains, then she runs to Petra and complains. That is the sign of someone who is self absorbed and immature. Even if she was so compelled to let every single person know how bad at sex she thought he was, the very least she could is wait until he left the house. I came home late after they had already fucked in the shower so I didn't see the lead up or the actual act and therefore I can't comment on such things, but if the guy at least treated her nice beforehand, she can't even show him enough respect to not embarrass him like that?