My mom makes me feel like a horrible mother...

Tr

I love my mother with all my heart and I'm so grateful for her and everything that she's done for me but lately she's been making me feel like I'm not doing a good job as a mother. My son has long curly hair and it was a mess because he just woke up from his nap, well I took his little baby comb and made his hair look a little better. I just gave him to my mom so I can set up his new swing and I told her "I just got done combing his hair" well she looked at my son and said "she didn't do a good job" and walked away with him and as she was walking away she just kept saying it "she didn't do a good job with the babies hair no she didn't" now this isn't the first time she has criticized my parenting. Another time I took my son in her room so she could spend a little time with him, well his diaper was a TINY BIT wet, I just changed him before taking him to her (he pees everytime after I change him) and she said to my son "she just keep the baby laying around in a wet diaper" I just don't understand why she's the way she is. I wish she would say positive stuff about me and his father to our son... It just makes me feel like a failure as a mother. We all live with her because we lost our house (long story) and are trying to save so we can move but with this virus going around we are stuck here with her and I'm ready to pull my hair out. If my daddy was still living he would take my side and not say stuff like that to my son