Can i get some advice please?

ok so there was this girl i chated with about 2 years ago on myspace and aim and phone we never met but we talked and clicked and planned to meet and it turned out 2 of my female cousins went to school with her they never hung out but they we really cool with her in cl...so anyways my mom sent me upstate to live with family untill she got a new place we could move into so i kept telling her i was gona come back and i gave her dates but it didnt work out well i came back 6 months later but when i tried to talk to her she would ignore me. we stoped talking and i recently thought of her and added her on fb i tried to say hello but she didnt write back but meanwhile she would like my posts.....i figured she was mad that i kept telling her it was gona be soon before we met and she got her hopes up everything.. does anyone have advice for me i really like her and she liked me should i send her a messege comment a photo put up a statuus or what ?i just dont know how to go about it thanks everyone