I let my sisters rabbit free overnight?

So my sister has like 10 pets that she barely takes care of, just hoards them and locks them in one spot all day. I really felt bad for this bunny in particular bc it's big with a small cage, earlier that day I noticed he hadn't fed it all day so I did.. then I decided to let it free. I shouldn't have done it but he has so many pets it seems unfair to keep them locked up, depriving them of attention or food sometimes. He did the same thing with a bearded dragon that he had, which he now got rid. Anyway I just wanna if this was the right thing to do or should I be ashamed. Would appreciate honest feedback
I let my sisters rabbit free overnight?
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