Wrote girlfriend engagement song

I wrote my girlfriend a song where i ask her to marry me i sang it to her first then showed her the recording we listened to it in the car. Btw she said yes. however she had no comment about the recording none at all it sounds pretty good of corse i am no recording artist but the song is pretty descent it has acoustic guitars and an island beat. anyway.. at the moment i have no ring i told her the next day we would go shop for the ring she liked and i could afford. so the next day we woke up and we went shopping for her ring we took pics and we went home. when we got home we looked online for about 2 hrs not once did she mention the song nor asked me for a copy she also mentioned that if she told any body about the engagment everyone would ask so wheres the ring? what about the song? so she went home kissed her bye and that was that. she later called me so i confronted her about it. she said sorry... but i was upset. she said i was acting like a brat then said you know what dont give me shit i dont want a ring i dont want the song bye! what should i do?