Ok, here’s a direct question: What exactly do you think OP should do? It’s all very well to talk about the sin of pride, but I think “stop being proud” isn’t exactly an instruction that I know anyone can successfully do, or we’d all be saints by now. We’ve established @TheAmazingGrace most likely isn’t a saint, but I doubt that’s a revelation to her. (The rest of us probably aren’t either.) So here’s the options:
(1) Find some way to make herself believe in the Church teaching immediately. I’m not convinced the average human brain works that way, but maybe you disagree.
(2) Continue to search, but refrain from the sacraments until she finds that she can agree.
(3) Receive the sacraments, showing submission by seeking the truth and by refraining from acting against Church teaching.