i think it's time to stop adding sugar, it's really not good for her. there's a product called nutri-drench that you can use instead. add some of that to the feed & water mixture.
also after 3 hours dump the mash and make new, otherwise it grows bacteria.
perhaps there's a blockage of some kind but it's also true that strokes including heat strokes can cause difficulty swallowing .
i'm glad you can get her to an avian vet .
she hasnt had any real food in a long time now so she is starving to death.
sounds like the stroke affected her ability to eat/swallow.
Is an avian vet an option for you?
Do you know how to tube feed? She needs to eat a real food made for waterfowl or an all flock feed, not grass seeds.
take...