<human>: I have been supporting my girlfriend for four years while she pursues school.

She had gotten her associates in Business Admin last December but still does not have the diploma. She has shown me congratulatory letters from the school's president saying that she graduated but I still have not seen the diploma.

Last she constantly lied about how she was doing when she had actually stopped turning in and doing work for the second half of the semester. I snooped on her computer to look at her grades and forced her to tell me the truth. I felt used, taken advantage of, resentful and hopeless for the future our relationship. I was inconsolable for days after and had several breakdowns. But I have given her a second chance because she comes from nothing (extreme poverty) and I do love her.

Even though it has been months since she has graduated, I want her to show me the diploma from her Associates in Business Admin. She refuses to harass the school about it even though she said they claimed to have originally forgotten to send off to have her diploma made. She says that she doesn't have time to make a phone call every week until it comes in between summer school and part-time work.

Even though the lying about school happened more than a month ago, I feel waves of hopelessness and feelings of being taken advantage of. It is still raw and painful. She doesn't seem to care why I feel this way. All I want to see is some progress (diploma) and it feels like I wasted 4 years of my life as well as thousands of dollars taking care of someone who doesn't seem to care about how I feel or trust me.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I feel like my girlfriend has been abusing my generosity and has betrayed my trust and does not want to prove herself trustworthy again. It feels like this relationship is doomed. :\