|"(Before I try having her D/L 30+MB over a dial-up interface (given I can't get my stick mem to work with her PC)..."|
If her machine has USB ports, you may have some success with the "generic" Win98 drivers:
Just make sure you get the proper set (Win98FE vs. Win98SE)
"IOW, do you have experience in a driver set working for more than one model printer, or are you just guessing it might because it indicates Win98 compatibility."
From personal experience I know that HP writes their drivers for several models under the same series (and different OS's).
"Windows 98SE has great support for USB, so don't be fooled into thinking you can't find a modern USB-powered printer that will run on Windows 98."
While Win98 has support for some USB devices, it would be a stretch to call it "great" (unless you compared it to Win95, which was pathetic). Microsoft left most OEM's to the task of making their own USB drivers for Win98, and much better native support came after Win98, particularly starting with Win2000.
"Channeling the spirit of jboy..."