I wanted to add information pertaining to the term "titi" but it said I was restricted and I didn't know if this site included Louisiana French as I've been told it's, not the same, to put it nicely.
My adopted Aunt who was creole told me the term meant "little aunt".
She had no children of her own and I was the only child that she had call her this (all others used "maw maw").
I was a kid so she didn't explain it any further but it's like an aunt that's not a real aunt from what I understand, in New Orleans, Louisiana and areas.