It's pretty easy, actualy.
Give manglement exactly what they ask for (note the "exactly" ... it's important).
It'll crash & burn, they get a black eye, and you look good picking up the pieces.
Register readers tell us that supporting employees and their IT equipment is a daily challenge, seemingly designed to expose any weaknesses in the IT team's ability to keep systems available and users working productively. It is interesting to note that it is users of all levels of seniority who provide the test, with …
Bosses want the latest non-standard device? Of course they can have it. But it will need to go through a rigourous, fast-track, testing process, i.e. you and your PFY get them too. And there isn't the knowledge to support them internally so this lucrative work will have to be outsourced to that third party you just set up. Then there's the blackmail potential of tracking usage...
..will only need a standard laptop with decent specs. Nothing fancy, as their main job is to communicate, not number-crunch.
First and foremost, a general manager must be able to communicate with lots of people inside and outside. The nitty-gritty analysis and reporting should be delegated to assisstants. If not, something is wrong with the "senior" guy/girl.
So if she can (safely) read Email, surf the web, create and look at office documents, her demands should be met.