Ravelry is an
amazing!! place to go for help. There's a ABJD group you can join. I know they'd be plenty of help.
I go on there to find stuff to knit for my girl. Do you only have specific yarn/needle to work with? There's always the option of finding patterns for kids or adults in aran/bulky/super bulky and scaling down needle and yarn size. I found a sweater pattern that was originally meant for super bulky yarn and used a worsted to make it to scale for my SD.
Since I'm not a crocheter, I might not be good at guessing which direction to go. Lol but maybe you could try a simple crochet barbie or blythe pattern with your worsted yarn and needle?
I just measured
my hand and would say make your ties for this top. The edges might nearly meet all the way in the back once on her.