DreaminGirl, she will work in P10, but as you suspect does have some feature limitations. Mainly, P10 users won't have the face control chips as easily accessible, you'll have to select them from the menus in the Current Actor or Parameters palette. Secondly, the facial features and body parts use "smooth translation zones" that allow you to stretch and reposition body parts and the facial control chips. For example, smooth translation can be used in the eyelid controls to lengthen and shorten the eyelashes. So any content (characters or poses) that use smooth translation to stretch body parts may not look exactly as intended. Then, of course, P10 doesn't have SuperFly, but Firefly materials are also included for content as well.

Those are the major issues. You'll have a lot more fun with her in P11 to be sure, but she will work in P10. All bets are off for P9 and earlier ... some got her to load in P9 but with major issues, others couldn't get her to load at all because P9 crashed and burned. And P8 and earlier don't support weight mapping.