There is also an adjustable one on ebay for 82 or 83 plus shipping. Just search Gladius link in motorcycle parts. You'll probably want to raise the forks in the triples to keep the stock geometry. Just be careful when you do it that you don't go overboard and quicken the steering too much.
Before you start messing with all that, though, you might check into shipping the seat to Spencer's Seat Mod. He can shave an inch off the Gladius seat no problem. Try that first, and if she wants it even lower, then get some links.
The Gladius is basically a reworked SV650 naked. Tons of short folks have dropped those a bit to fit. You can probably use a dogbone from an SV to do the job. Just check with your local Suzuki dealer to see whether the measurements on the shock linkage are the same for the two bikes.