I absolutely thought about your girl (that's "Trouble" right?) when I gave these chicks to this hen. She was originally sitting on bantam cochin eggs, but one day she got off the nest, and I saw an external pip! She stayed away for a while and I thought she was abandoning them, since it was her first time. So I gave those eggs to a broody cochin who hatched them. I left her with a few "dud" eggs I had removed from another hen, and she actually sat back down on them later. Well one wasn't a dud and it hatched a few days later.
The lav orp eggs, I transported an hour from my farm to my house (one already had an internal pip!), after my broody black split killed the first 3 hatchlings. I took the other eggs and brought them home to the incubator. One hatched the day after I brought them home, the same day that the OEGB hatched the cochin chick, so I gave the lav orp chick to her that night. 4 and 5 days later, the other 2 lavs hatched in the incubator. I didn't give them to her right away, because she had the other 2, and I was afraid she would reject the last 2. But I finally thought "what the heck", and I tried it, and she took them in!