This is tricky, so I'll go with a soft EHS.

The bride completely took advantage of you. I don't think she sounds like a great friend, so if I were you, I wouldn't offer to do her any more favours.

I know you said you would take photos of the ceremony, but I think you were naive to think you wouldn't have been asked to essentially become a photographer for the whole event. As photo editing also comes into play, I think you should have negotiated a fee or put your foot down at the wedding. Refusing to give the bride the rest of her photos when you didn't agree on a cost beforehand is a bit of an asshole move, even though she pressured you into it.