What am I to do?

Why can't she understand me? I keep hearing myself asking. There is definitely no answer to it as I am speaking to myself.

I am trying my very best to accommodate her, she says she wanted to get married. I said, ok. Just that I told her I can't do it now. As I am in the midst of my studies, I had told her that after the completion of my studies we can get married a year after I started working but then she blew her top. I asked myself, am I asking too much for a postpone of marriage?
Why does she expect me to ask my parents for money to marry? Don't she realized the amount my parents had spent for me to get through university in a foreign land? I am sure the amount my parents spent on me to complete my degree is more than what her parents spent on her for a lifetime. That said so how am I going to ask my parents for more money for this marriage?

Why can't she just understand this?