Advice of how to have a difficult conversation

[Bookworm]

I agree with Alphaghetti. Just calmly ask her if there is anything she would like to talk about regarding what happened last week as you feel there may be some lingering feelings about it on her part. Then tell her how you feel about what happened and that in order for things to continue in a positive way, you need to be respected and that from now on if there is a problem it is handled like an adult or you will no longer be able to provide care for her.