I've been backstabbed by several family members how can I get past this?

it's a long story. But basically I was recently betrayed by my aunt uncle and cousin who was more of a sister to me. I'm not coping with it well. I miss my cousin so much but I'm trying to be strong and not just start talking to them agan and sweep sh*t under the rug because they not only hurt me but put financial strain on my own family. My heart is breaking. I missed my cousins hs graduation tonight...something her and I worked hard together to achieve. It hurts more to know they are just living their lives and have made no attempts to reconcile with me. I'm 100% without a doubt right in this situation and I am owed apologies. Do I give in just so I can get my family and favorite cousin back, and make the first move? Or should I stand firm like I've been doing? It's been about a week now and I cry everytime I think of her. But if I go to them I feel like I'm almost "making" them apologize and I feel like if they cared about me at all that tey already would have done it. Help :'(