Just go to the housing management office to handle the household division, which is allowed by the state. For example, if you have two houses, you can separate one from the other, and then you can have two rooms, one for you and one for her. But there is a problem, as long as her name is there, it means that the property is half of her. If your sister is unreasonable, you will only lose half of your property. I'm just talking about the problem, not your sister, LZ. Never mind.
This operation means that you have to ensure that there is no loan for your house.