We had that same problem with Hailey, our Ibizan when she came to us..
She only ate of the floor ?f from our hands..
We just tryed different sort of bows (metal, plastic) and even from our bowl collection, wood, pottery etc..
Also tryed different sort of shapes, high and low.
She started to eat when we gave the food on a normal dinner plate…
After a while we changed that to a simular bowl and to a normal feeding bowl like the boys have.
After a few months she ate nice and calm out of a normal bowl.
Good luck, it's sometimes hard to find out what they want