OT - keiki on prayer plant?
Do any of you have any experience with prayer plants?
No, but I have met a Maranta or two. They told me they were agnostic so I
don't know what to tell you.
Marantas, on the other hand, are pretty easily propagated from divisions so
it is possible your little growth with roots is part of the rhizome that is
above ground. When you sever the baby(horrible thought) be sure to put it
in a pot with a rabbit track or herringbone design on it.