(Follow-Up) My Mom thinks Norse Paganism isn't a genuine modern religion

So relating to one of my previous posts, I told my mom to start off with the process of telling my family I am Norse Pagan and when I told her she said it wasn't a modern religion and even said that I could "like" it but still be Christian, I am in utter disbelief at this and do not understand how to react. What do I do?