What should i do about my jealous maid of honor?

so here it is.... so my maid of honor has not been there for my since i announced my engagement... rude comments... not even a spark of happiness.... my moh has been engaged for a year and plans on getting married next summer. i just recently got engaged and of course i was elated so she was the first person i told! she acted as though she was not even happy for me... i could hear it in her voice. soooo when i shared with her that my wedding date would be a few months after hers... she was not happy. unfortunately i am in school much of the year and i had to move my date to the summer. 1 month before her wedding... which made her even more mad... (i didnt mean to make her mad, but i didnt have alot of choices on the date as the hall i wanted was booked almost solid through the summer) i apologized and her response to me was that she wished i would be more considerate of her... well... its MY wedding! i am choosing a date and time that works for my fiancee and i... not one that works for her... anyways she just keeps saying how if shed known i was getting married in the same year she wouldnt have had hers then... :( soooo.... she has come up with every excuse why she is upset... money (her whole wedding is paid for... she cant buy a 100 dollar dress and help plan a bachelorette party?- pathetic), stress... (she says she wants to be there 100 percent for me... again ... whatever. make some time or just say ur cant be my moh... ) soooo i guess my question is.... should i try to make things work with my friend of like 15 years... or should i just say forget it and find another moh who is supportive and there for me??