Hrm... Well, it's more like there's a temple of knowledge on each continent, and the Sphinx guard those temples. Basically, a copy of anything that's ever been written, researched, built or recorded, regardless of how trivial or earth-shattering. I would say that there's probably a lot of information in there that would be MORE dangerous to have in the hands of monsters than humans. She would not be adverse to sharing some information with the Mummy, but not everything. And based on the fact that the riddle of the Sphinx was supposed to be ever-unbroken, I highly doubt anyone has managed to get in there to spend their days drinking in the knowledge. No one's defeated a Sphinx, that's for sure, though that insinuates adults not Felyn.<br/><br/>So, basically, without trying to be OP, it's probable that no one knows the bulk majority of what's kept in those temples. You might get the odd person who solves the riddle and is granted access for a particular thing, which would be all they would find, but it's a very "Touch nothing but the lamp" kind of an idea. If they try to go after something that wasn't their goal, they get sealed into the temple until it's opened again - probably thousands of years later.<br/><br/>Infamously, the riddle of the sphinx was supposed to remain unbroken until Ma'at himself bestowed the answer upon mankind. It just doesn't seem like it'd be free knowledge for anyone. That said, I see no reason why she woudln't talk to someone about something she'd read in the temple, if it was relevant to a conversation. After all, if she was having a conversation about butterflies and spat out a piece of trivia gleaned from a field guide, not exactly earth-shattering. But she's not likely to reveal the location of Atlantis or the secrets of Alchemy over breakfast toast.