The last one
If you are one hundred percent shore that she is stealing,and that its not something with her being a teenager cause then it´s hard to bee nice to every one. Then maybe you should find some evidence of it to show your parents so that they can't turn you away. But first you should go to your sister and tell her that you now that shes been stealing. And say that she need to stop.The second person you should go talk too is the one shes been stealing from. You need to push her in the right direction so that she quit stealing cause thats no good.Also try too find out what shes using the money that she has stolen for cause it could bee something very serious like drugs.
It would bee great if you are able too solve this without turning to the authorities. Cause after all she is your sister.
You solved the problem, but you might just check the text again. There are some minor spelling issues.
SvaraRadera