Firstly, I think you probably meant to post this in chit chat?
At any rate, I have to tell you that your post makes absolutely no sense. If you're seeking advice, you need to be a LOT more specific than "so I have this friend who was talking to someone about this thing that we need to fix or not but if we don't the person may not have fixed that thing my friend knew about in the first place." Can you see how your post doesn't tell us anything about the situation?
Really, I was following you up until the last paragraph. All I can say is that if you and someone else have a problem with one another, and you feel sufficiently uncomfortable about leaving it unresolved before your graduation, then perhaps you should try to go to that person and bury the hatchet. Leave everyone else out of it.... your previous "helpers" obviously didn't help that much. Talk it out and, if you get rejected, then you can go away knowing you gave it your best effort.
As for the rest of it, I can't make heads or tails of your situation.
.....Kelly