Esther locking the bathroom door

I thought her locking the door intentionally was to have time to get rid of her wristband and necklace. It's obvious people don't see why would she do that.

When I was growing up, we didn't lock the bathroom door in case of an accident, like falling in the tub. I know it's unlikely but it's just one of those things that parents often do. We also didn't look our bedroom doors when we went to sleep in case of fire or another urgent need to vacate the house. But, I also agree with your point that a self-possessed, mature girl like Esther could have been trusted to leave door locked, or to not have her mother gaurding outside. .

Earth. Welcome.

That part of the movie was really odd. The mom's paranoia was understandable, but you have a 9 year-old girl who was recently introduced to the family and her new father and brother are still strangers to her you should respect her need for some privacy. A girl that age is on the verge of puberty after all.

It was also odd that the dad didn't pick up on Esther's attempts to appear younger than her alleged age. She did not act like a 9 year-old. The mom realized the way she dressed was weird, but the dad didn't give it a second thought. He also kept referring to himself and his wife as "mommy" and "daddy" and encouraging her to as well. This would be odd for any 9 year-old and especially a recent adoptee.

~The internet? Is that thing still around?~

One of the reasons I didn't like the mother.

At that point, she WAS starting to get suspicious and notice odd things about her. Like lying about her piano playing skills and her antic looking frilly dress she wore to school.