i'm very sorry to hear that fussy! sounded like things were going so well.. Mother nature has got a pretty good handle on things.. i'm sure she'll be a good mama hen all on her own! she only sat two eggs?
She'll accept the chick just fine. I've even had success sneeking unrelated chicks under a broody hen 2 weeks after all hers hatched!
and as far as helping a chick from the egg if it's in a struggle; i know A LOT of people will say don't help, but it's gone well for me more often then it's...
Thanks to everyone for the great information! @ChickCharm- those are some nice coops! you've inspired me!! thank you so much for sharing.. Merry Chirstmas to all!