As long as you use gloves, wear a respirator, there really isn't any danger. It's not like it is going to be wet for days. It cures in about 20 minutes at the most. If you are exposed to it for a few hours strait without a break you might start to get light headed, and even if it does get on your skin it isn't an emergency. It is a pain to get off of your skin, but it won't do any long term damage (you will be stickey on that spot for a while, and it may itch a little).
If she still has a problem with it, then ask her if she could do it for you.
If she still has a problem with it, then ask her if she could do it for you.