My sister has genital herpes, can i get it from using the bathroom after her?

No because you would have to come into sexual contact with her which I am quite sure that you don't do.

No - herpes is a virus that is spread by direct contact.
no!! you need direct contact with the herpes, primarily when there is an outbreak,
www.thedoctorslounge.com is a great place to ask health related questions.. Real doctors will give you feedback. But to answer your question I dont think you can get it like that only direct contact.
NO, Herpes is a virus......You can catch herpes through Sex.....If you have a fever blister on your mouth and you have oral sex guess what you will have genital herpes.......

Herpes simplex one mouth herpes can be passed on that way. Herpes simplex two is sexual.......

You can not get it by using the same bathroom or panties if you tend to share.......
Yep.
there is a slim possibility. Use those nice bathroom wipes they have for toilet seats and a different roll of toilet paper. She can take a medication that can help her keep the outbreaks down and help prevent the spread of it too. If she has a baby and has a bread of herpes when she starts her labor the Dr will do a cesarean so the baby will not get it. The intact bag of water will defend the baby.