I agree, I like the look of this character and I'd love to see you do more with her.
How about I come up with something. She's a fairy right? Well, fairies are tiny, so it's only natural that they'd be highly fertile and have very short gestation periods. Which would explain why she's so startled here, she's unexpectedly fallen pregnant for the first time, having no idea, and found herself expanding overnight; though it's perfectly normal for fairies' bellies to grow this fast (she'd easily eaten her own bodyweight in berries over the past few days).
After having her body stretched out and giving birth (which I really hope you draw), she falls in love with being a mother and decides she has to do it again, she wants a whole big family to herself (which, as a young fairy, she can naturally do).
Feel free to draw pictures of any stage!