As a first time 'Grandfather' dealing with a daughter with a serious case of 'New Mother's' Disease and amped-up by an activist Pediatrician, this has got to be a real mind twister for you.
Both of Kiwibird postings (as normal) are spot-on. Read both over and over until you become comfortable with the reality that the real world is still there and the ground below you is still stable.
When you become a 'great' grandfather (or likely quicker - a second grandfather) and the kids are dropped-off with full diapers and little else, you can recall this moment and see the humor of it all. I saw it with my daughter's second child.
Where to start:
First: 'New Mother's' Disease commonly ends shortly after diaper changes become smelly and commonly occur multiple times at the wee hours of the night or a little later when there is a need for a 'free baby-setter.'
Second: As mind twisted as you are, your life mate, that loving woman that you where 'lucky enough' to get her to marry you, has to being really feeling the pain of all of this. Hold her close and tell her you love her more than life itself.
Third: Set-up a visit to your Avian Vet and get a full screen chemical blood and stool tests, which would be required if you where going to take your Amazons to Europe. Have the Lab and your Vet sign the document set as would be needed for that level of travel. There is no reason to share with the Vet that you are not going to Europe. However, telling your Vet the real reason you are getting the documents will get you a load of real world information if you choose to pass this along to your daughter or worst her activist pediatrician. This is really for your peace of mind.
Forth: I going to guess that you and your dear wife have not been anywhere lately. Time to travel (multiple long weekends will work). Money can be a problem, but I would guess that you have friends and family with second homes or first homes that you can visit. When they hear why, nearly all will open their homes or second homes to you and yours. Also, most will be open to your Amazons. Most people will be willing to have your wife, since like my wife, she will clear their home spotless every day you are there.
Fifth: Stop answering your phone when your daughter calls. Let it go to voice mail. Call an hour later or the next day. Allow the both of you to off-load the stress that is being dumped on you. Keep reminding yourselves that; 'This to shall pass!'
Sixth: When you talk to your daughter, 'Tell her that you 'Love Her' you have always loved her and always will. Tell her that you and 'her loving mother' need a little time to understand what she is requesting and need a little time to sort it all out. She will likely understand since in her mind you are both really old and slow. Generally, they figure out fairly quickly that she/they need the both of you ASAP. Sometimes, you will need to just keep repeating the above. Avoid addressing her demand. Let time work in your favor. Never raise your voice, never speak down to her, never stop loving her.
You will likely have two or three months of 'pure hell' in front of you. But there is a sunny day coming.
Kiwibird touch of something that has also bother me - the possibility of something deeper going-on. This forum is no place to take on those topics. But, consider seeking-out a professional (faith or ...) if this builds. Your going to need to talk with a trusted third party to keep you grounded.
Please do not give-up your Amazons, both of you are going to need them in the days and weeks to come. Once again, hold your loving wife often. The two of you have climbed mountains before - that love was all you needed then and the same is true now.
FYI: Remember that the human month is consider a sewer, a source of untold ugly. Yes, there are multiple meanings.