Thread:Merrystar/@comment-25389948-20141228185858/@comment-11001-20141230063756

Hello. I'm sorry, but Tyler is correct. Your account is responsible for what happens on your account, whether it is you, your sister, your brother, or your dog who actually makes the edit.

In this case, I'm not quite sure why your sister would have a different IP than you, but if she did not simply "borrow" your computer when you had left yourself logged in, then I recommend you change your password so she cannot get access to your account again. You will need to use Special:Contact to request a checkuser, but as you will then simply be reporting the results back to the same group of people, I'm not sure how it will help.