I don't think your family is bad @outlander
I would think there's no malice in the way they treat you. Whatever their reason, be it the way they were brought up, your position in the family or something else, they've established patterns of behaviour that are entrenched, similar to the patterns of behaviour you've learnt in order to feel OK and find a place in your world. Every person is always doing the best they can at any time. But all of us can always do better.
I can feel your hurt, and I feel helpless to take that away from you. I'm sorry life is like this for you lil Sis. I really am. You interact fine here on the forums, but you have that level of anonymity that makes it easier for all of us to be more vulnerable, honest and raw.
You're never going to loose me @outlander
As long as I'm breathing I'll always be here for you. You have my word. You can try to push me away but I'll keep coming back. You make a difference in my life sweetheart, and my days are often better because you're in it. Hugs and hugs my angel.