If you have been watching a model for at least three months, then you should have a decent idea of how she runs her room. If you haven't been watching her that long, you can't yet assume you've seen how she is. Sometimes, I laugh at trolls, sometimes I quietly ban them. On a rare occasion, I will mock them, but I'm *never* okay with the members in my room mocking the trolls. Members who have been around for awhile sometimes forget that, and need me to put them in their place.
As to answering a person's questions, well, again. If you've been around awhile and actually do know the room rules, ONLY if I'm busy. If I'm not busy, but haven't really been answering questions, then a "check out her profile, it's really informative!" is... well, I have mixed feelings on it. I've seen it actually run guys off, but I don't know if they would've been the sorts of guys to pay or if they were just freeloaders anyway. Also, I've had plenty of guys say, even after me saying that it's on my profile, that they want to hear it from me.
So, use caution when trying to answer for the model. And whatever you do, if you're going to say "tip for requests", make sure the request is something the model is actually willing to do!