Honestly, if you can go to another doctor who will prescribe the Tenex while you work on the insurance company, I'd do that. The insurance appeal takes some time. And honestly, I don't see the insurance company agreeing to pay for the Intuniv if the Tenex hasn't been tried. My insurance company's initial response was a list of medications to use instead of Intuniv, and Tenex was on the list. Our problem with Tenex was that we weren't able to give a small enough dose as to not knock my son out - the slower release of the Intuniv seems to alleviate that problem.
I guess I'd also not beat around the bush with your doctor - tell him/her that you're going to find someone who will prescribe the medication in the form you can afford. You don't have to be ugly about it, just say you really feel like you need to try this avenue until you can get Intuniv covered by your ins. That alone may be enough to change her tune.
