I'd have to agree with this. People take suspicion too personally. I think her being in a rage was a bit uncalled for though; I mean, it's not that big a deal. Both of them were being silly IMO.
I have to agree. Tinder is an app to meet and (likely)****, it's fine to be suspicious, after all: http://www.cbsnews.com/news/california-man-jake-powers-suspected-of-raping-tinder-date-possibly-more/
That said, it's a casual sex app. Someone turning you down could mean they found someone they think is more attractive or more dtf. Don't be so hung up on someone not wanting to **** you.