Rear pannier rack for hydraulic disc 142mm Jamis Renegade

I'm looking for a rear rack for my wife's Renegade Expert.  It has frame attachment points, but the hydraulic disc brakes and 142mm hubs mean my collection of old (ancient?) racks won't work.

This will be used for commuting with moderately loaded panniers so I don't need expedition weight...  

Her new job is now a 9 mile commute so she'd like something faster than her old Trek 970 rigid mtb with a Bob trailer.

Any suggestions? 

This is the rack I'm using on my Moots with 142x12 and hydraulic brakes: 
http://thetouringstore.com/thetouringstore/tubus-bicycle-racks-for-touring-and-commuting/tubus-airy-titanium-rear-rack/

Works great, weights almost nothing, and clears both 700x45's and 650x47's. 

Cheers,
Greg 

https://youtu.be/P5HmdPG0oEU \n \nI used this with my rlt steel with hydro disks. Was easy to intall. Gets faster and easier with a few installs. I even ran this and mudguards together.

I've been going for an utlralight commuting setup on my Renegade Elite. Been happy with the Bontrager BackRack Lightweight and some Arkel Dry-Lites Waterproof Saddle Bags which are just large enough to hold a 14" laptop in a neoprene sleeve. Rack is capable of 50 lbs, but I don't trust the mounts on the carbon frame with much more than about 12 lbs on the rack. Was considering a Tubus Fly rack but the Bontrager was half the price and only about 100 grams more weight (and still about 1/2 the weight of some racks).