I personally am a believer in display cages with plenty of room for them to move around, including verticle space...if nothing else I can add shelves or branches. That said, I’m currently quarantining two subadult bps in tubs measuring 17”W x 23”L x 6”H. They are terrestrial creatures for the most part, so I don’t think the additional 1.5” reduction in height from what I use will make that much difference. As long as she can hide, drink water, and thermoregulate, she should be fine. If you see pushing behavior or nose rubbing, you might need to reconsider.