I have rules in my house about amount of screen time, sweets/treats and discipline. DM looks after dc for a short time on certain days in my house, but ignores these rules. This is not to 'spoil' or be nice to dc, it just gives her an easy life. As she wasn't a good mother to me when I was younger it has been difficult for me to entrust dc to her but I have little choice as a single parent (I already pay out a lot for childcare).
I have spoken with her many times about this, but she ignores me and even tries to hide things from me. She encourages behaviour I won't tolerate and I'm left to pick up the pieces when tantrums arise because of inconsistent messages.
I know I will be told I am ungrateful and she doesn't have to give up her time but in my house don't my rules apply? AIBU or is she?