I think it really depends on your hen. If you give her the babies, do it at night when she is all tucked in. Watch her closely to make sure she does accept them. My silkie will adopt anything literally. We got her when she was 4 months old and put her in the basement brooder with the week olds. The polish would fly out of their little brooder and tuck under the silkie. She was fine with it even though she wasn't even laying eggs yet. She just hatched 2 eggs a little over a week ago. I ended up with another broody hatch 5 babies, but was not interacting with them. So I gave the 5 babies to the silkie who took them in just fine. Even though her chicks were a week old, she took the day olds too. The other broody ended up with more eggs. Do you know anyone that has fertile eggs you could give to your hen?