Well in the first picture she has eye-puff fillers and something making her head appear smaller. Second picture you can not see her face much. Third one there are apparent lip fillers. Fouth one looks more natural!
I think Taylor sees Angel as someone she can trust for a friendship. I don't think Taylor trusts people who are similar to herself that much. That is why she needs a young and gullible fan to be her friend. Looking at her past, it seems like she feels people who are like her are out to get her. It's the same thing with Dakota really