A.H.
We've done it both ways and both have worked out ok. If you're traveling east to west I'd consider moving her to CA time. Think about how early she'll have to go to bed and whether that's going to work out from a practical standpoint. Keep her up the first night and let her sleep in the next morning, then when you get back wake her up "normal" time the first morning you are home.
ETA: Cover up the windows of whatever room she will be sleeping in so that lighting will not affect what time she wakes up.