You could try putting the chick with the silkie hen and see how they do.
If the hen will adopt the chick, that will be convenient for you and good for the chick-- she will provide warmth, and teach it everything a chick needs to know.
But this might not work. A hen usually needs to be broody for about 3 weeks before she is willing to care for chicks. It is rare for a hen to accept chicks when she has been broody for only a few days. I think it may be worth trying in your case, but be prepared to rescue the chick quickly if she does not accept it.
I would probably try giving the chick to the hen in whichever place the hen is sitting, and watch what happens. If she accepts the chick, then you can decide whether to move them both to somewhere else or to leave them there.
Chicks usually peck everything to learn about it, so the chick will probably learn to eat and drink anyway.
If you want to help, you can use your finger to "peck" the food and water.
You an also put shiny marbles or something similar in the water. The chick will try to peck the shiny things, get water in its beak, and learn to drink. Chicks usually learn to drink anyway, but I think this helps, and I know it makes me feel better