IMHO, Tummy Lady sounds like it would be an exciting fairy-godmother-type character in a Disney movie or something. I too think it's kind of cute
(truly no intentions of offending anyone). I can somewhat see though how a toddler could become curious and excited by that and want to see their Tummy Lady (who knows what thier little minds fantasize
)
I wouldn't read too much into her curiosity. In her mind it is probably much more simple than it seems to you.