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I wouldn't leave her that long, if she doesn't like being in there or out of her cage she could get quite stressed by it, I usually don't put mine in the carrier any sooner than I need to just leave enough time to get her settled & comfortable, I often find once you leave home they tend to settle down a bit more anyway.
As Serendipity said put plenty of substrate & some shredded tissue in so she can burrow down a bit.
I usually put my carrier in a large bag which helps to keep it darker (& warmer if it's cold) & a bit less stressful, make sure there's still plenty of airflow though.