Step mom advice

I just became a step mother to a 11 year old girl over the summer. Well her father was incarcerated last month. So I have step up and is taken care of her until her father gets out. Today she wanted to be very argumentative with me take a shower this morning before going to school since she didn’t take one last night. So I woke her up thirty minutes early so she could take it. She wanted to argue and didn’t want to take it. So my choice was to punish her with out tv and laptop and to her room. It was going to be for the day but she wanted to stomp away from me so I told her a week. Well she wanted to slam doors so I added two more weeks on. So do you think I am being harsh or do think this punishment is good for these choices that she has made?

Updated:

Update I spoke with her father today about what has happen once he called me and he agree to my punishment because she use to do this with him when she wanted to try and be the parent and not do what her father has told her to do. So this is a on going problem with her thinking she is the adult and don’t want to listen when told to do something