<human>: Can you give me the gist of the text in a nutshell?

We've been together for 1,5 years and it's been going perfect. We are both young graduates and living together.
She comes from a quite traditional and a very healthy/happy family, with which I have a great relationship, she has the same with mine.
We briefly mentioned the subject of marriage and we both thought it might happen to us someday but we are too young.

So.

Her mom was diagnosed with terminal stage cancer and two monthes to live and she went to stay with her family after a while. After she came back (she is going back to her mum soon, she is still alive) she said me that her mom was so devastated and anxious about our relationship (for her parents it's very important that we should get married) that she said that we decied to get married so they could choose the robe / jewellry / everything together to disract her and make her feel a bit better. That made her mother very happy and made her smile gain. But then, the news spilled. Her father was head over the hills and called me right away to congratulate me and said that he would provide for the wedding and buy us a house cause he knows that we are young graduates. I was so shocked when I received this call because she didn't notify me beforehand and her dad just called right away like that! I just played along but felt extremely stupid.

She really begged me for forgiveness but stated she cannot take her words back and cannot admit that we did not discuss this desicion beforehand, at least not until her mom passes away. She asks me just to have a small civil ceremony in a small circle just to see how it goes. If I am against, she said she'll try to explain it to her father somehow but he'll most probably take it very badly.

I feel taken aback as a very important decision has been made absolutely without me. I have to say that I do love her a lot and I am very much afraid to lose her and I did plan and think to marry her, but not now and not after having been dating for 1,5 years
<bot>: GF told her dying mother that we are getting married to make her feel better, now we are both cornered and don't know what to do.