Thank you all for the feedback
I've added more substrate now - I didn't want to put too much in at first in case she had a bad reaction to it, but thankfully she seems fine.
She keeps changing sleeping locations for same reason, last night I caught her burrowed down under her wheel!
I got these pictures of her before, not sure why she was awake so early but she was having the time of her life rolling round in her sand.
You can see she's pretending to be shy
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