You've got a lot pulling you down. The biggest thing is you're in a family that provides you with zippo in the way of emotional nurture. That's huge and unlikely to change much, which is disappointing in the extreme. Supportive family relations are what normally helps people through hardship. You'll not be getting that, yet you still hope for it.

Your sister is a very damaged person. You're trying to interact with her as though she weren't. She knows that you know about her stealing that money. She probably tells herself that your mom was getting her needs met in memory care, so she didn't really need the social security checks. That would be screwy thinking, but it's how humans rationalize guilt away. She also had the example of your brother to set a precedent for doing what she did. At some level they both probably thought they were entitled to what they stole. But they don't like you knowing what they did. So she's not going to want to have a lot to do with you. You're disgusted with your siblings' actions, which are reprehensible. Don't think that they haven't guessed what you think of them, even though you may not have expressed it. They know.

Sending the flowers was you making believe you have a relationship with your neice that's better than it is. Flowers delivered to someone at their work site is a bit over the top. She may have seen it as a fake gesture. I suspect you are making nice gestures, trying hard to overcome this family bitterness. You mean well, but they are unimpressed possibly because they are being more realistic about the lack of good feeling in this family. Don't send flowers to someone you suspect loathes you. If you truly want to repair rifts, start with much smaller, humbler gestures. Otherwise, it might be viewed as you showing off.

Get into Facebook, and tighten your privacy settings. Don't leave yourself wide open to any random hater who wants to attack you. I won't allow anyone onto my Facebook page whom I wouldn't want in my home. I take pride in keeping my "friends" list limited to a select few. Try that for a while.

I'm glad some of the car loan pressure is lightened up. The bank doesn't really want your car. Repossessing and reselling it is a nuisance for them. You did right by contacting them and reassurring that payments will be forthcoming.

With all those hours you're working, it is tough to have a social life. Try to connect with your friends in small ways. You are wise to not discuss your financial problems at work. I hope you feel more secure, as you gain experience on this new job. Things can get better. Don't over-invest in lost causes, like relationships that are unlikely to improve.