Tell her to stick with the Across
You can always put more bags on it for more storage, the boot locks, 180 (or so) K's between fuel stops is plenty for new riders, esspecially on a 250.
Most new Across owners worry about the fuel at first, but after some real rides noone ever complains. They're easy and cheap to maintain (don't even need to disconnect the fuel lines

haha), go for a bargain nowdays and age really really well.
My '93 has 77,000km's and been through 3 crashes -2 low-sides and 1 "sideways flippy-over tumble"- and still runs great, apart from a bit of lack of care from me lately (battery dying and carbs need a good clean & balance).
There's only 1 inherent problem we've noticed, which is the throttle slide needle holders (which clips the diaphram slide to the diaphram lifter thingy) wear quite fast, average around 7000km of life. They're readily available for $5 and take a few minutes to replace though, so it's no biggy. Usually you'll only drop one at a time, which effectively blocks it's cylinder, can be fixed on the road with teflon tape or anything else to 'jam' it in.
The ZZR and GPX have more kick off the line, but the Across has more top end.
From stock the forks are too soft and get some exciting head-wobble breaking hard into corners, so most of us have added a few 20 cent coins to add preload and/or changed to 15w oil. Then jack the rear preload up to max and it handles really well.
Oh, and the NRMA screwed me on insurance for the Across, so I couldn't make it for Sunday's ride... buut, all things going well, I'll be at Pie In The Sky next Sunday around 9am. Would prefer to be on ZXR (:() but at least it's a chance to displace all these mean Across rumours, hahaha

ZXR"900" - In pieces... again.
Another engine gone but at least the purple and pink are still there, oh yeah.