hen abandoned nest on day 23

It does not hurt to try.
if you don't have an incubator try these tips.

https://www.backyardchickens.com/t/690945/emergency-incubator-what-have-you-used

http://www.ehow.com/how_5926013_give-egg-heat-incubator.html

cardboard incubator
http://www.google.com/search?newwin...urce=og&sa=N&tab=wi&ei=sn8TUtmWLciw2AWiiIHoBw

 

I am so sorry about your loss anyway broody chickens usually abandon eggs after first hatch especially when you take the baby away but you did the right thing when you took it because it was injured. Sometimes they get agitated when you move them but get back on after a little while I know that the really broody ones don't even budge when you move them but every hen is different so really all you can do now is wait or you can try and sit her back to get her interested again good luck

 

Sometimes broody hens get off on the first hatching others stay on until all hatch, Yours might have gotten agitated by you moving it maybe you should just try sitting her back on to see if you can get her interested again I've got a broody hen on day twenty and she is a serious broody she pecks me like you wouldn't believe viscous little girl all 5 of my eggs are fertile so I'm hoping we get some tomorrow, I also once had a broody hen that got of her eggs on day 21 after her first hatch then she left the baby and off she went so I made a quick homemade incubator electric blanket and nice warm fleece jumper and wrapped eggs in that managed to hatch 6 but one little fella didn't make it good luck

 

I think you should try and incubate the eggs since you can't rely on mama, and she didn't protect that chick which got attacked. She may even have attacked it herself. First time broodies are not always prepared to be mothers.

You could try tapping the eggs gently to see if they move, or making chicken sounds to see if any respond. Sometimes a hen leaves the nest if she feels the eggs are no longer viable. She most likely quit, because chickens don't react well to changes.