I Have a Question

Let's say you live with someone you are trying to get house sorted decorated and things but the person is quite demanding and wants it done quick and there way but you can not really stand on ladders or chair you are short and no good at decorating isn't your thing and house work you can help with that but she is kind of beating me to it and thinks it's only her doing things she won't let me help lately much cause she wants it done her pace her way i can understand from the other person's point of view and the frustration but how would you go about it so that it is equal as she is getting rather aggressive with her partner and arguing with me about it what do i do what would you do.