Looking at the OP, the first question you need to ask is does she really need to print everything in color or just print it out?
If she just needs to print it out, I'd say get a decent B&W laser and then a light duty inkjet for the occasional need for color.
If she needs everything in color, I'd say a color laser would probably be the best bet. Inkjets while they produce stunning results, tend to go through ink cartridges quickly and the costs tend to add up. Solid ink, I'm not a fan of. I used one for a while. I found I had to be careful handling the printouts. Since the wax was deposited on the surface of the paper it could scratch off, and if you were folding the sheet, it had a tendancy to crack. That said the color output was stunning, but I don't think it out weights the draw backs. I don't remember the model I used but it was Phaser before Xerox bought the company.
How much does the catridges cost and what is their expected life? This is very important with the amount of printing you are doing. There are a number cases where a more expensive printer ends up being cheaper on a per page basis then a cheaper printer when all of the costs are figured into it.
How easy is it for you to find replacement catridges? I had a really nice Epson printer a number of years ago that it was hard to find catridges for locally, so I had to always order them and have a number of spares on hand. This may not be much if the catridge may cost $35 each and need 1 color and 1 for black, but if you go with a color laser you may be paying $100+ per catridge per color (4 color Cyan, Magenta, Yellow, and Black are used to print everything). The good news is the toner catridges should last much longer then a inkjet, so you should need fewer of them.