grandma argues with son takes anger on baby

Everytime my baby's father and his mom gets into an argument she said why do you leave your son here . He calls me demanding I hurry up and go get my son because she's tripping . Then she begs for him later on that day . Then she texts him saying don't play games with me play games with your son and your baby mama ... I now feel uncomfortable being there and leaving my kid there am I wrong ?? She shouldn't be putting the baby in anything