I really felt she knew he was dying and wanted his suffering to end. Azure is also infected with papilloma. Three months ago she passed several blood clots. She is isolated from my other birds as was Boomer from the first day he arrived. I have always taken care of them last and never use anything from that room near the other birds.
Papilloma can escape even a careful bird person.
Boomer had been quarantined for 45 days and vet checked by a very good vet. He showed no signs of papiloma until after he was out of quarantine and by the time it showed on Boomer, Azure was infected. I had their papillomas removed every six months to a year. Neither bird has suffered from a prolapse which I believe is because I had it removed whenever it appeared again. I went through Azure laying eggs and screaming in pain as she lay them.