I have a very good friend

I work with. However, she is a very dramatic person and I am very intorverted. I am always there for her but everytime I walk in there is something always so horrible with her life that it is draining me. Im exaughsted before I even walk through the door. I can't even get a word in. Also when she talks through out the day she always reiterates the same thing when we already talked about it. I just want to tell her to shut up 😂