You need to take some things at face value:

(1) When the old GM said "have a good day" even though you weren't leaving or he wasn't, he likely didn't have time to speak to you or want to engage in conversation, but he was being polite anyhow. He was polite to you, and you are taking it as brusque or rude because it's not what you want, which is this imagined relationship.

(2) When the trainee manager said "thanks for everything" when she was new, she was likely just trying to be a good manager and be nice to her employees by saying thank you. Instead of taking it as a thank you, you have to take it badly because you don't like her and you seem to think you're better than her because she's younger than you.

Other things you need to realize: you may have a disability, but unless you've asked for a reasonable accommodation and it's been approved, you can't say "you aren't accommodating me." You don't get accommodations for hurt feelings. You may have been overwhelmed from working back drive, and if you need an actual accommodation to not work back drive, you need to fill out the paperwork to get that accommodation.

Making you do your job and fill up sauces, a simple task, is not being morally deprave. Your hurt feelings because of your stalking behavior is NOT the same as someone who has lost their mother.

Every time you mention the GM to anyone, it does not matter the context, you tarnish his name by making it sound like you had some relationship with him. You have already been told by a manager to stop talking about him, and yet you brought him up today as an excuse to the trainee manager. You need to STOP talking about him completely. Not talking about him, not using him as an excuse, not asking people about him, not asking if he'll talk to you. You need to STOP talking about him entirely.

You need to do what any manager, trainee or otherwise, tells you to do. You need to STOP giving them attitude, whether you like them or not.

You also need to stop asking your coworkers to play therapist to you. You can go to NAMI and other support groups while you wait for your next therapy appointment, but telling them all these things is not good for you or them.

Ruby, I know you have these feelings and to you they are very real. You need to find the appropriate outlet for them though. Work is not that outlet.