I've never owned black cats in my life, until now! I have 2! They're both still kittens, about 6 and 7 months old, but they're getting along really well. Both boys. They were cuddling together after just having met 3 days before I took that picture.
I think with your kitty, it seems like she doesn't trust your mom. Your mom is the one whose slippers freak her out whenever she hears them. So it doesn't surprise me that Luna would poo on your mom's bed. I think your mom needs to bond with her more to let her know she's not a bad person because right now Luna just doesn't trust her. And another thing too, your mom should keep the door to her bedroom closed when she's not in here to prevent Luna from getting in there.
She's a really cute kitten, and it sounds like other than the poo thing she seems to be coming around! That's great news! One thing I've learned with my new kitties, which is totally new for me, is that some cats just don't like to be picked up and stuff. All of the cats I've had in the past have loved being picked up, petted, cuddled, etc. But with both of these new kitties, they are the type where I have to wait and let them come to me to be petted on their terms. Usually when I'm watching tv with a blanket on my lap, they will eventually end up on my lap asleep. Neither one of them likes to be picked up at all, which is weird for me because I'm not used to that with my kitties. But we're adjusting, it's just taking some time because we're all new together.


