Well, we've had her almost 2 months and I have some updates.
Our Vet emphatically insists on Harrison's Pellets. We've been feeding her those pellets and a healthy chop variety twice a day. Her personality has really developed.
She has gone from being completely silent to mimicking sounds we make towards her (sweet noises, nothing obnoxious). She wants to be with us or around us almost all hours of the day.
She is so so so sweet, really good with our 4 year old and 7 year old kids. She is also really good regarding biting/nipping, she hadn't bit hard and her warning bites are firm enough to let us know how she's feeling without breaking skin. When she has had enough scritches/head pets she very gently grabs our finger in her beak and uses her neck to move it away from her. She also LOVES showers and is offered the opportunity daily.
(Post shower)
The regurgitation has been minimized, now its only once a day and a very small amount (following 2 weeks of antibiotics).
We returned to the vet last week (as I had to take our other bird in for his annual and I wanted them to trim her nails). We found out some interesting information from the vet: she had previously chewed her wing feathers (no destruction/plucking since we've had her), she was malnourished (she has gained 40 grams in the past 2 months and is now a healthy 395 grams, healthy as determined by abdominal palpitations by vet), and her feathers and plumage has regained brilliance that it seemed to be lacking when we first got her.
Attached are some pictures of her in her new glorious self.
Honestly, we couldn't have asked for a sweeter bird. She has become a prized member of our family and is spoiled with toys and attention. So glad we rolled the dice on a "rescue" versus trying to buy an Eclectus sight unseen and shipping the bird to us.