The mayo/mustard will sort of cover up the "eggyness" if that's what bugs her.
She's a toddler. She doesn't even know what's bugging her.
I was "picky". You are only picky if your parents let you be.
We have a friend that was feeding his young kids everything under the sun when they were just old enough to walk.
It's funny, baby girl used to eat everything. Then she just flipped a switch. Little man will just copy her, but only what she says, he'll say don't like broccoli as he's creaming it in his mouth.