Mommy is treated differently

My 2.5 yr old seems to test my limits more than with her father. She likes to put her hands under my shirt and even though I tell her everytime, mommy doesn’t like that, it hurts. She still forces her hands and gets aggressive following a tantrum. I’m the only one who has to sing “you are my sunshine“ to bed. She doesn’t demand this when she goes to bed with her father or if she stays at her grandmothers. My husband says, she throws a lot more tantrums when I’m around at home as opposed to when he’s alone with her. He says, she’s more peaceful and calm.

I’m not sure what the problem is, or what I’m doing wrong. I feel like I’m being treated differently and walked on by my own toddler, it’s making me upset ! What do I do?