Fifteen seconds is longer than I want to be hugged by most people. So, I sympathize — and have an idea for you. But it seems to me that you are avoiding a second issue here: Your mother-in-law’s compliments, while sincere, don’t square with your values. And avoiding her hugs will not fix that problem. So, why not talk to her about it? It sounds as if her life experience may have been different from yours. That’s no insult to anyone.