Helping my lonely only chick

I have a chick that hatched five days ago, and, due to intervening to save her too many times, she ended up the only of five eggs to hatch. She is perfect now, but she came out half the size of any other silkie chick I've seen (about 1 inch body, 3/4 inch head. She's now about 2 3/4 inches. I have a silkie batch hatching tomorrow.. .like maybe 10. Should I put here in with one other day-old silkie chick, who will probably be her size, or should I wait?

She thinks my hand is her mom, and the only way I get her to eat is to pretend my index finger is mommy hen's beak, and peck around on the floor for crumbles, 6 times a day. She eats very well, just not alone. Her brooder friends are a feather boa balled up and a mirror.


Any ideas are welcome. thanks!

 

Thanks! She just got 6 white siblings who are one day old and bigger than her. She's a week old tiny silkie like smaller than a button quail. She looks at them like: "can't you cheepy things get it together?"