Some people just like to gripe, complain and critizie others and it sounds like you got one of those. I married into a whole family like that. Whenever they start pointing out my mistakes I just look at them sweetly and tell them where the door is. (Okay, sometimes not so sweetly). I have always told my children and grandchildren if you can't say something nice then please don't say anything at all. I would probably tell my mother the same thing. (I have told my MIL before). Fix your quilts the way you want to. They are your quilts not hers. And NO, there is definitely not anything wrong with doing it your way.