OP, keep in mind that, while she may endorse the products, that doesn't mean that she uses them. If they aren't good quality, then that is the fault of the maker, not her. If putting her name on something in order to get money for her endorsement makes her a fraud, then so is nearly every sports star, race car driver, and rodeo rider.
Also, people in her position meet hundreds or thousands of people at every event that think themselves her best friend because they maybe exchanged a "hi" 2-3+ years ago...if that. They have to learn to be curteous without being overly friendly as to keep the lines moving and to keep from being over-whelmed.
We were literally the only people at her stand, with barely anyone else at other stands. At that time I must have been 8 or 9, so in that perspective I was just heartbroken. The one reason I was real excited for the trip is to meet her. Like literally I remember being scared of walking up to her for a picture, and I had this huge grin on my face