3. … She never introduces them to you
Okay, maybe at first you were thinking, “Gee, isn’t she allowed to make new friends? Maybe because she’s met people who support her new interests?” Okay. Valid point? Maybe.
But you have to think about this: Has she been avoiding you getting to know them? If yes, then you should be worried. She might be preparing for a new life and she doesn’t want you, part of her old life, to be in it.