HELP - Badly crushed egg, but chick is alive

[Mixed flock enthusiast]

I have a Nankin bantam egg that was badly damaged while I was changing food and water for our broody. Mama was sweet and snuggly buff bantam cochin until her first chick hatched. Now Gem is GemZilla. I was not expecting a violent attack, but she jumped at me, landing hard on her nest. One egg has a pip-like crack, but no hole. The other is badly crushed on one end and the membrane is definitely disturbed. There's blood seeping, not much, but enough to know that we have an issue. The best/worst part is that both chicks are close to lockdown and still alive! I've dripped wax over the cracks/holes and moved them and the one undamaged egg to the incubator, for now. I don't have pictures, yet, as it all happened really quickly. I'll try to get them in the morning.

I'm hoping I can nurse these two along for at least a day or two, but I have a serious concern. One of the broken eggs is very dirty and there is a serious concern over bacteria ... especially in the incubator, where the humidity is high.

So ... Please ... has anyone dealt successfully with this before?
Should I remove the damaged pieces of the shell and coat what's left of the membrane with coconut oil?
Should I adjust temperatures or humidity? Humidity is still climbing, but nearly at 70 %, right now. Temp is almost to the "usual" 99.5.
Should I "cup" them on the unbroken half of the shell?
Help! I wanna save my babies!

Looks like you’ve already received some excellent suggestions. We’ve now hatched two dented by broodies eggs in the incubator then returned to mom once hatched. Neither chick has any problems. We also hatched a large number of putrid guinea eggs contaminated with broken eggs and who knows what else! I was amazed at how well they did. For the contaminated eggs, I didn’t want the keet dragging its fresh navel through this yuck, so I would grab it as it hatched or immediately upon hatch, then quickly daub navel with chlorhexadine, then placed in a sheltered warm clean 95 F brooder area to dry off.

 

[MROO]

I just walked my friend through helping her gosling that this happened too under her broody goose a couple days ago and her gosling is perfectly healthy and back with her Mom now! Do you have an idea of how close this chick is to hatching?

It's too soon to actually hatch safely, but looks to be within a few (2-3) days.

 

[coloradowildflower]

Best of luck! I'll be hoping for a happy hatch!