I feel uncomfortable about origin names (whether it's
Cheyenne or
Dakota or
Roman or
Scott) when the family concerned has no significant connection to the origin. Just my opinion; your mileage may vary.
I particularly dislike
Cheyenne because the pronunciation makes it sound like you're describing a girl named
Anne as being shy (Shy
Anne). I've even seen Shyanne and Shy-Anne, which is just absurd to me.
So . . . no, it doesn't get my vote as a sister for
Jewel.