Maura was asked to leave West Point over the credit card theft and some other violations of the honor code. Some speculate that even if she was about to get kicked out of the UMass nursing program over it too, as it caused her to be ineligible for their program if she had a conviction on her record. This is just one of the pieces of the puzzle for some of the people who think she either walked away from her life or committed suicide. There is also a hit and run that happened on campus right before she disappeared, that some want to connect to her even though the evidence is really not there. She and her boyfriend were both carrying on in secret relationships and several odd things happened right before she disappeared. Based on her internet searches, some people think it's possible she was pregnant when she disappeared. It's an odd case from the beginning to the end!
I do find it interesting that LE has not ever revealed the ATM photos they have of her from the afternoon she disappeared. They sealed them and refuse to discuss them. It's probably just protocol, but it makes me wonder if there was something about her appearance that was a 'clue' for them?!