My sister would’ve slept through that, no problem. She could sleep through anything. One time in frustration of her not getting up (me being parentified at the time) I pulled her off the bed by her feet, dragged her through the house, picked her up and threw her roughly in the back of the car. She stayed asleep the entire time. No, she was not faking. She woke up at our grandparents’ house, highly confused by how she’d gotten there.
Once she also slept through her window being shattered on her by a tree limb. And I am sure other incidents I’m forgetting. I also did throw water on her one time, though I didn’t pour it in her ear. It didn’t even rouse her a little bit. She didn’t even flinch or react in the least.