Hey! I know that snake! It's Bella!
She belonged to my ex-boyfriend. He asked me to take her, but I don't have anymore room for an adult female currently. But I'm happy that you're on here! I've always liked that girl.

I don't think she's aggressive either, so I'm going to have to agree with everyone else and say she is still stressed from the move. How long have you left her by herself since you got her? Most leave their snakes alone for 1-2 weeks before handling to ensure a stress-free transition. And like you said, she has an EXTREME feeding response, but I've never had a problem picking her up in the past. Do you wash your hands before sticking your hand into the enclosure? Maybe she's smelling all your other pets on it? Is your tank in a high traffic area? That could be the cause as your husbandry sounds perfect.
If you're afraid of her striking, you can direct her head away with a paper towel roll.

I don't know what the white marks are either, but I always thought they gave her character.

I feed all of my snakes in their tubs and none of them are aggressive or have struck out at me. There's a poll/thread, here, that talks about feeding in the enclosure, and almost everyone who has commented said their snake shows no difference in temperament.

Regardless, I wish you luck with this girl. I believe she will settle down with time.
I remember Jon telling me he found the perfect home for her. Sounds like you're doing a great job.