<human>: Can you summarize the given text in a few sentences?

Me [27] gf [29] (Sorry it's so long) [throwaway]
Background: We've been dating for 6 years, living together 5 years. 
Ok so, she keeps throwing marriage around, claiming she isn't getting any younger, and would like to be married before we have a kid (she's not prego). We had a LDR for a year before we moved in together. She has a BA and was living in a city where she could use it, where we live it's not really relevant, nor are there jobs relating to her field (except teaching). So she is going to school for a MA in law. 
She claims before me, and up until recently she didn't want to be married, and only wants to be married to me. She says she wants to be married by time she is 30 (that's next year) so we can have 1 or 2 kids before she is 35. She doesn't want anything crazy, I think she quoted the total cost at $4000 for everything. $900 for the service and photographer on the beach...  
My thing, I don't have a great enough job to support her yet. I don't have a BA (i'm working on it) and my parents still contribute a lot to my living expenses. (though she would prefer if we did it on our own.) I do want to marry her, someday. 
She says if we don't have plans (ie a ring) before Easter, she is going to leave me, drop out of school, to pursue her original career, 10,000 miles away. 
Is her ultimatum justified? Am I a total dick? I'm lost and need your help. Please put things into perspective.
Thanks in advance.
<bot>: MY gf of 6 years has given me the ultimatum of being married by next year or she is leaving me to pursue her dream career.