It's a shame that you and your mother both quilt, but can't share the joy in that with each other. It sounds like she is jealous or threatened with your enjoyment of your quilting and is trying to squeeze fun out of it for you. Don't let her make you feel bad. Find some quilting friends who are NOT competitive or judgemental and talk 'quilting' with them, instead!
Also, you might want to try machine quilting one on your sewing machine. You do not have to have a longarm, nor send your quilts to a professional to be quilted. I certainly don't. I'd feel like the quilt was only half mine if I didn't do all of it myself.