Mother in law

Okay, so I live with my mother in law (she can not support herself) and I was fine with it but ever since I was pregnant and since i’ve had my son I’m super uncomfortable with her. She keeps asking husband “why I don’t like her holding the baby?” And today she got all upset that I don’t ask her for help and that she wants to be more in with him but he’s my son and shes rarely here and when she is my husband is here and I default to him because that’s his son. Also it feels like she is always watching me and when my son cries for too long because he’s fussy she feels the need to jump in and be like “give him to me” So I’m wrong to not like that she holds him. I’m not sure if it’s me taking it wrong or if it’s my postpartum emotions just elevating everything