Getting along with a step-parent isn't a walk in the park, particularly when they switch up their tone towards you behind closed doors.
The idea that a teen should immediately bond with a step-parent and step-siblings simply because their parent fell in love is naive at best, and pressure-filled and manipulative at worst.
Relationships take time, intention from all sides, and mutual respect and understanding. If one of those is missing, it's going to be a long road. Luckily, the internet is here to give perspective on that road.
She wrote:
AITA for making my step-mom look crazy so I can avoid babysitting her kids?
I (16F) live with my dad. My mom passed in a bad accident a couple of years ago. My dad met Josie in a grief group or something like that and they got married last year. Josie has two kids (8M, 6M) and I hate living with them tbh.