As a few posts here have mentioned, some people are *toxic* and are also emotional vampires. I mean that literally: they can leave one emotionally drained, and their chief weapon is *guilt*.
It would seem that you have done what you can to heal the breach, but there are members who are are actually *feeding off* of the negative emotions. This is their staple diet it would appear.
Place more value on yourself and your loved ones, and let the other side of the family convince you that they are worthy of consideration.
In other words lovey, don't try so hard. As the saying goes 'Been there, done that and have the T-shirt to prove it'. It is only when you refuse to play the game that you are able to be strong.
As another saying goes..'I'm just sayin'.