phobia: losing my baby

My son is 15 months old. He know 15+ words. He has 8 teeth and 2 more coming. He eats 3 meals a day with snacks in between. He drinks milk and water regularly. He doesn't like juice. He gets a bath nearly everyday and is never left dirty. He sleeps pretty well. He gets plenty of interaction and is happy and healthy. So why am I so scared my mil will try to take him away? she likes to say dss won't like this or that when we do something she doesn't agree with. like cosleeping. she acts like she knows it all and says we are unfit.