It depends on the girl and the situation to calm her. So far, it's too vague to help.
stuff themin a closet lock them outside
tell your parent
it depends on how shes annoying you
UMMM. by making her waffles
get a camera and record her hitting you and show it to your mom
im not exactly sure but if u have something that she wants you let her borrow it
he doesn't have a 15 year old sister. :)
Force her to stop, pray, or you can do this. You be more annoying than she is, then when she wants you to stop, you say this," I will only stop if you stop being annoying." That usually works most of the times.
no my sister did
legally, i think so, but it depends on how mature they are
yes they will have to be brothers or sister yes they will have to be brothers or sister
No
tell on them