Stepdaughter HELP

I have a stepdaughter that’s 5 years old. She is constantly jealous, disrespectful to me. My boyfriend always tries to correct her, she will be nice to me for the next 2 hours and then goes back to being the same.

IDK what to do.

It’s irritating

it’s annoying

it’s driving me crazy

We get her on the weekends and I dread for the weekends to come.

I don’t allow that behavior with my nieces and nephews, should i be allowing it with her. Just because i don’t want to be known or seen as the bad or mean stepmom.

😭😭 I literally sometimes when it’s just me and her. Because i will tell her to clean up her plate of food that i cooked for her

she always says why??

you do it!!!

i always respond because i’m asking you to

and then more attitude comes 😩

Any advice would be appreciated

I talk to my boyfriend about it but he always says he will talk to her

which he does

but she doesn’t listen

I love him

I love her

My parents and my whole family has accepted and learned to love her. But with me

she’s just a brat

Please

please HELP