Are you worried about her handling a razor, or would you just prefer that she wait on these more womanly tasks? If it's the razor you don't like, try the new Veet products - there are 2 kinds with a plastic tool to remove the hair. Have her carefully put the cream on her legs while she is standing in the tub. By the time she finishes the second leg and her armpits, it's time to remove the hair from the first leg. Anything that drips ends up in the tub, and then she can shower off, using a washcloth to remove extra cream. No razor nicks.
If you would prefer that she wait a while, that's okay - you have to stress to her that appearance isn't everything, she's fine and natural the way she is. She shouldn't let outsiders (or the commercials) dictate her self-image. The problem is, she may have peers who are already shaving, having their periods, etc. If she has other signs of puberty, then it may be difficult to get her to postpone the personal care options until later. She should be briefed on all of the changes she is going through and prepared, so that there are no surprises and so that she gets her info from you and not exclusively from friends. There are some great books out there too - try the bookstore, and see if your library carries some. Good luck! I know, they grow up so fast - and with all the hormones in our meat, milk and other foods, it gets earlier and earlier.