I met a girl at a friends wedding about a month ago - she seemed really positive and fun and we talked a bit (mostly about her) and i notice she kept sitting next to me, coming outside when I was..etc

she crossed my mind a few times since then so I got her number from my friends new wife, and gave her a call. She was driving at the time so I told her I'd call her back in 15 but she didn't answer. i text her to say i don't understand what i said in the matter of minutes to make her ignore me and that i would take it as if she is having a bad day... she text me back to let me know she was having a bad day and that she would be free the next day should i wish to call. i was busy all week so i called her at the end of the week but no answer. she text me a few days later apologising, & she was having it hard and busy with work, but saying i should call her sometime during the day. considering the trends so far i am no fool - she will not answer.

what the hell went on?