Just look at them! They're gorgeous and don't even resemble the two birds your Mum brought home. You're doing really well with them - I especially love the photo of Flora all big and proud
i think I read about someone's rooster who had a similar issue, and she sterilized a syringe and drained it and the rooster came out fine.
But of course I am not recommending you do that. Instead I recommend you take her to a vet, but you may not want to do that so I'll just say poor chicken, I hope you figure it out!