So I’ve been talking to a friend that’s a girl. Recently I realized how pretty she was. I said I thought she was attractive, and she said the same. I asked her for a kiss, and she said she wasn’t ready for her first kiss because she never had one. Is this total rejection?
No, it's just hesitancy, shyness, uncertainty, and a slue of other emotions at play, she isn't rejecting you she is reluctant to progress.
Maybe try asking if you can hold her hand. Kissing is rather more intimate act. For P. addicts it surely is hard to understand.
Best move here, if I were you of course, I would take her on to a date. Something you know she would enjoy, and you as well. Build momentum with her, then kiss will come up naturally.
As a chick (although I don't think it should be considered a "chick thing") I can totally relate to feeling attracted to someone but not being ready for a kiss. It isn't rejection, it's what she said : "she's not ready". This is probably the best advice, she needs to get used to your proximity so yeah, take her on a date, let both of you become closer and she'll probably do the rest when she's ready.