What does it mean if a girl is "frustrated and bored"?

A girl and I have been flirting for a few months now and I had planned on asking her out the next time I saw her in person. I'm not nervous about asking her, because we have both been fairly obvious we like each other. I live a few hours away though and can only see her once a month, but a mutual friend told me that she was feeling "bored and frustrated" with the way things are. I don't want to rush it and ask her out except in person but am I waiting too long? What does that phrase mean.
What does it mean if a girl is "frustrated and bored"?
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