She'll do it by mail, you need to remove the rear panel, as above and post it to her.
It's a good job, proper Ultralite screen, double stitched where it should be, looks great in the dark tint.
You can check out her site to see an MGF with a dark tint.
MGF & TF Rear Window Replacement
I rang around lots of trimmers, I was quoted upto £175! for a repair, someone quoted less than £75, but when I asked what screen they'd put in, I was told "something that fits"
I wouldn't say it's hard to get the panel out, just a bit fiddly, take your time, don't lose the plot when the bolts won't budge!
You'll need a small torque bit and a drill with a few bits. I can't tell you what size torque bit it is as mine are rusty and mixed up, but you'll probably need to drill the heads off anyway.
The bolts underneath the bottom rail will come out with the grips after you drill the head off, but there's one in each side at the bottom, tucked under the side flap, if these won't move, drill the heads off and drill through with a 4.5mm bit, (cover the boot lid with a sheet) you'll get a new M5 bolt to bite. I got some slot head M5's from B&Q they are a little long at 10mm, so I dremeled off 2mm and they fitted perfect with new washers.
I'll take some pics of the finished job tomorrow, if you PM me your email address I'll do a set on how to remove the panel.