Well she ended up going into her own 29g. Super shy, so I added some barbs, which she likes to ambush and flare at. I know she'll outgrow the 29g in a few months so I'm keeping an eye out for a used 55g.
The fish store has several nice looking KKP. They're housed with the BP and I think are the same price, but clearly different morphs. If she grows a bit and is switched to the 55g, I'll probably get her a buddy.