If a girl says she doesn't miss me?

But when I told her I could be going away (work reasons) she kept asking and asking where I was going and (because I didn't want to "jinx" it) I didn't want to tell her where and then she asked me "when are you gonna be able to tell me?". Does this mean she does miss me or is she just curious? I like her a lot and I feel she likes me but she puts up this barrier (she has never had a boyfriend) and although we do talk and joke and have a lot of fun together, when I hint something about me liking her she starts acting weird and distant and if I stop talking to her for whatever reason she gets upset/mad at me.
If a girl says she doesn't miss me?
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