Based on the age of your child, badmouthing is not going to be enough to gain primary or full custody. Taking aside the aspect of whether or not some comments made may have been accurate, the comments go primarily towards you, not the child, and the child is too young to understand them. Therefore, custody may have provisions to stop some level of badmouthing when the child is present and that'll likely be the end of it for now.
I beg your pardon, mate!
I'm just making lemonade out of lemons rather than throwing the lemons away
Based on the age of your child, badmouthing is not going to be enough to gain primary or full custody. Taking aside the aspect of whether or not some comments made may have been accurate, the comments go primarily towards you, not the child, and the child is too young to understand them. Therefore, custody may have provisions to stop some level of badmouthing when the child is present and that'll likely be the end of it for now.