Good morning, R.! It sounds like this is a problem you need to remedy before your 9-month-old picks up on it and tries to control you too! Your 2 1/2 year old is running the show, and you need to start showing her that YOU are the boss, not her. This can be done by acknowledging the behavior, i.e., "Yes, sweetie, I know, you don't like this, BUT ..." and maybe putting her in a safe place so she 1)doesn't make you deaf with the screaming or 2)pull her hair out because she's not getting her way. It's a normal thing for adults to show affection to each other and the sooner you get started showing her that, the better. It's going to be loud and pretty unnerving for a while, but stick to your guns! It'll be better for everyone in the long run. (Can you imagine her at 13 or 14 and running the show? Believe me, it's not pretty!!) Good luck. Please keep us posted.