I'll just comment what everyone else has. To me, she doesn't look like she's mean, and I don't consider the snakes to be mean. She looks frightened to me.
At her size, I'd offer her food every 5 days rather than every 7. When she starts to consistently refuse at every 5 days, move her back to every 7.
When you go to take her out to handle her, if she's in that strike position, gently touch the top of her head with a paper towel roll or water bottle to get her to duck her head, and then confidently pick her up.
She may be very tense in your hands if she's frightened. The MOMENT that she relaxes, put her back up. Keep the handling sessions brief and positive.
By putting her back up the moment that she relaxes, you are rewarding her with something that she wants, being able to retreat to the safety of her hide. With some conditioning, she'll start to realize that relaxed behavior will get her, her reward. You can then start to slowly extend the handling of her while she's relaxed and then putting her back up first after a minute of relaxed behavior, then after 5, and so on.
Good luck with her, don't give up on her. She's just a tiny baby, and you are a big predator in her eyes, she doesn't understand your intentions are not to eat her.