Hang in there, it happens to all of us. Whenever there are messages from the A's "friends" it is never going to have a good outcome IMO. If you blocked your number so she wouldn't know it, how does her friend? I would prob. change my number and make sure her friends don't have it either. You don't need the extra stress and manipulation coming from her friends when you're trying to take care of yourself and stay NC.
Try to use this as a learning lesson. It hurts when people text us and update us on the A. I always tell myself, if I am putting the effort into going no contract with him/her, I might as well make it NC from any addict or any friends of the A too. We just don't need the extra chaos .