Struggling with other people holding my baby

Is anyone else struggling with other people holding their baby? I haven’t let anyone even meet him besides my mom and my MIL. We currently live with my MIL and I’m going crazy she is a very judgmental person and always holds things over my SO head and always has a better idea or always has to be right. And I don’t want her kissing my baby but now it’s created s huge issue between my SO and I because I don’t think she needs to see or hold the baby every night..