Well, in general I'd say she certainly MAY forgive you. It worries me, though, that she said it would be fine if you did visit such a place, then got upset when you did it. That indicates that she may not be entirely in touch with her feelings. Then again, sometimes we think we'd be fine with something, but the reality is not what we expected.
Do let her know that you would not have gone if you knew that it would upset her, and (if you're sincere) let her know that you don't ever plan to go again.