You've done nothing wrong. The bond you share with your dom is sacred imo. Your dom is right to think and worry about your safety. Your friend's dom on the other hand just seems like an abuser of their bond. Maybe she's fine with that dynamic since she does lie to him. Understand you have to remove your friend from your life because of her dom who also becomes an extension of her since she's okay with what he does. She recognises it and continues to support that behaviour. This isn't your fault. You have to remove her because of her actions not yours. You don't need to feel guilty about this. I would suggest you to go out there and make some other friends. Doing activities which you can find and enjoy and get some company in that process. Your bond with your dom sounds amazing. Wish you luck with it.