Hopefully the vet can give some advice. Ask him if she does lay if it's better to replace the eggs with dummies and what size to get. I would worry that if the eggs sit for too long, they will spoil. Also, watch her closely if she lays, to make sure everything goes well. I know they can get egg bound or an egg peritonitis if one bursts inside, which is very bad. When my little conure laid for the first time (at the age of 13), I freaked out! I was going on a trip the next day and was worried she still had eggs in her and something would go wrong while I was away. I had a bird sitter but I didnt want to take a chance. So, I had the vet evaluate her. I cant remember if he did an xray or not, but we determined that there were no more eggs. Someone on this forum said the egg laying stresses the owners out more than the bird, and I think they are right!
I am so glad you gave this little bird a new life with you! It sounds like she came from a rotten home, especially if they let her kill two males. Please update us on how she does and what the vet advices. She's very lucky to have you.