Idk what to do about my husband and mother in law right now. Long rant sorry

Back story is that me and my husband and our 2 kids live with his parents because I’m in nursing school and can’t work as much and his dad had a heart attack and needs help paying bills since my husbands mom doesn’t work. I work part time and my husband works full time. I’m in nursing school full time and take care of the kids most of the time when we are both home. Out of the almost three years my daughter had been alive he’s only given her a bath twice. He’s never given our 3 month old son a bath. I just figured out tonight that my mother in law and husband have been talking about me behind my back through texts. I accidentally forgot to grab a dirty diaper out of our bedroom because I was trying to get dressed for work and stop our 2year old from climbing underneath the bed and getting stuck. I was going to grab it and then she text me saying he was hungry so I went to fix him a bottle fast before I was late for work and completely forgot about the diaper. Instead of saying something to me about it she texts him. like seriously if you have a problem with me say something to me not my husband! I also have a lot going on with my family since I’m pressing charges against my sister since she almost killed my 2 year old so my parents hate me and won’t talk to me plus nursing school and work and not getting any sleep since I’m the only one who is up with our son all night. I try and help as much as possible if they ask for anything I get it. Need groceries? I’ll get them. need to borrow my car like everyday since their one car won’t start? Sure. If they ask me to do anything I do it but to them I apparently don’t care enough to pick up after myself or my children or care enough to give my kids baths! When I’m the only one who does! I will admit I do sometimes forget to pick up things cause I get busy but I’m human! I’m not perfect! I just feel like they want me to do everything and I don’t feel appreciated for doing any of it but if I mess up one time accidentally I’m a terrible mom and wife. I feel so hurt by all this. I try to do my best everyday but I guess it’s not enough. Sorry for the long rant