What sort of vet/med costs are you facing per month? What are your options for shifting her to being an all-the-time outdoor dog?
We have a large fenced-in yard, and she spends hours a day outside, either with me or the wife working with her or just by herself.
I have had two English Springers in the past 20 years. My current one is 14 months old. He is extremely well behaved. Take my advice. Get an electronic training collar from GunDogSupply.com. It is fantastic. My dog is respectful because of it and very very happy.