Birthmark or post inflammatory pigmentation on baby?

Baby was born with red splotchy mark on cheek that went away around week 2 for a week or so. Then came back as a pink/brown darker skin color mark that is still there at 12 weeks. She also has angel kiss on her on. Dr isn’t sure what it is on her cheek but mentioned could be post inflammatory pigmentation and someone else mentioned it looks like cafe au lait spot. If it was cafe au lait spots then would it have been red and went away? If it is post inflammatory pigmentation, is there anything that can be done to get rid of it? Or what else could it be? Pictures of when she was born, when it was gone and then what it looks like now. Thanks!