My chicken stepped on the eggs she was sitting on, and badly cracked this one, taking off the end with the air cell. Tomorrow would be day 21, and I imagine it would have hatched tomorrow, since some of them have already hatched today. It had not pipped internally though, and the membrane is completely exposed. It doesn't look ready to come out at all, still has blood vessels in the membrane. It did bleed, which stopped, and the chick is still moving. I have moved it to an incubator, so far only been able to raise the humidity to around 50%, so placed a moist towel under it to try to keep it a bit more humid.
Is there anything else I could do to help it, or just wait and see?