Not just any make-up shop, it was Bobbi Brown - with whom she had a working relationship at the time. That was of course NOTHING to with the gushing about how wonderful the staff there were or anything.Making pronouncements about people's (not least our) motivation and mental health seems to be a core SH characteristic.
First time I was taken aback by it was when she tweeted - a few years ago - about being pestered by a man in the street and taking refuge in a make-up shop. In response someone commented that he might have had mental health issues - to which her response was something like: No, he didn't have mental health issues he was just a man behaving badly.