Now this is really cool:
http://www.inetwebinc.com/CatDoor/

I'll do that, especially since I think it will cover the area she
destroyed.

Are there other brands/designs to consider?

First course of action would be to keep the cat *inside* unless supervised.

Second would be to trim the nails. The damage is done primarily by the
narrow end of the nail penetrating the mesh, hooking and pulling out to
break the woven strands. During the summer when my boys bask in the
open, screened windows I keep their nails trimmed so there is no hook
and the nail is nearly square so there's no narrow end either. (I rent,
and this seems a good way to keep on the landlord's good side.)

Oh, and when the weather's nice I'll be treating them to walks ON leash;
they are always invited to join us on the front porch for fresh air.

-Alison in OH

I replaced the screen in my sliding screen door with this screening
material. I have a cat that practically hangs from it when he wants in, and
has done not damage whatsoever to it.

http://www.improvementscatalog.com/Parent.asp?product=255395x&dept%5Fid=15000&su
bdept%5Fid=15120

Get her declawed. Our cat has had all twenty removed and he still
tries to "sharpen" them on the back of the couch! If doesn't hurt them
one bit. Believe me, it's only in your mind.

You might want to try this, I bought some for selected windows I leave
open while at work in the summer:

http://www.petproof.com/

Caveat: This will only solve slashing problems, not pushing them off of
the spline.

This is what happened to me one day at my old apartment. A moron let his
dog run loose one day. It was the first loose dog I saw in 5 years at
the place. Daisy was sitting in the living room, on the window seat.
Idiot's dog saw her, and came up to the window where she was snoozing. I
was on the sofa also asleep. I was woken up by a huge commotion. The dog
had hit the screen with its snout, waking her up. She looked over, saw
the dog, and shot off, across the apartment, out the door into the
laundry room, and right out the window:

http://web.newsguy.com/equalizer/screen.jpg

This was the first time in 3 years that she'd been outside since I
rescued her. I was lost. I immediately sat down at the computer, and
typed up emails to all the shelters around there with her description
for when and if she was found. I was trying to work out logistically how
I was going to remain living in the apartment when my mortgage was
closing the next week, and I was supposed to do a 6 mile move. This was
all within 15 minutes of the incident. It ended up she was gone for 3
hours, and came back on her own when it got dark and started to rain.
She was very scared, though, and ran from me everytime I approached her.
I finally had to get on the other side of a fence and coax her over. I
scruffed her when I got a chance and ran her into the house.

When I saw moron, I gently and lovingly explained to him that if he ever
let his dog run free again, we'd both make national and maybe even
global news, but that myself and his family wouldn't see it, or anything
else ever again, but he would. Never had any other problems in the
remaining week I was there.

eq