About a month ago, someone who I've considered closest friend for many years invited me on a group outing scheduled for tomorrow. We had a disagreement recently (I invited her to something, she accepted but then changed plans when she got a better offer. I felt hurt that I'd been dropped so I called her on it which she didn't like) and whilst we've seen each other briefly since, I haven't spoken to her for a couple weeks (which up until recently would be unusual as we'd text/talk frequently) and I haven't had a text to confirm details about tomorrow. Do I...
A) assume she has forgotten about me and send her a text to see what the plan is?
B) assume because we've disagreed on something, she now doesn't want me to come and not contact her again until she contacts me?
C) send her a message asking if she is deliberately freezing me out because she is still annoyed about our disagreement?
We are both very stubborn and both like to think we're right but in this situation I do feel like the injured party - I think you don't accept an invitation from someone then go back on it because you've been invited to something else, surely? So I don't know now if she's genuinely forgotten she had invited me or I'm being punished because for the first time ever, I've voiced my upset about her behaviour. I kind of don't want to go for the A approach because if she has deliberately left me out, it'll be like I'm inviting myself out when I'm not wanted. I'm too old for friendship issues, I thought I'd be done with this in my teens! Thanks for any advice you give!