I am sorry for AJ
I was in the same position when I had my pain pump put in. I had been on large amounts of narcotic orally and IM. AJ'S dose of Oxycontin is HUGE, even halved it is a large dose. Is she a big girl?
Having the narcotic thorugh the pump and large doses of oral can lead to respiratory depression, this is why they must reduce the orals.
The titration of drugs following a pump does take some time in people who are already taking narcotics as there is definitely a withdrawel problem when the amount is decreased so suddenly.
Drug withdrawel is a painful experience so they should be giving her other drugs to counter the withdrawel process.
I do hope that she will soon feel better, and that it will be all worthwhile.