See an Elder Care Attorney, get Durable Power of Attorney for Asset Management.Does she have an existing will?

Vinyl is a pretty much industry norm cheap and durable.

Not vertical grain either but a very durable floor for a den.That knotty pine paneling in the other room is a hard to find item nowadays too so make sure your carps dont mess it up if you plan on keeping it.

The luxury vinyl tile in a stone look is pretty, neutral and looks durable but after having removed sheet vinyl I don't like glue down anything--but tiles should be okay.  

I am not a big carpet fan generally and products like LVT are becoming consensus favorites of DIY landlords (for ease of installation, durability, cost, etc).But one possible exception could be an upstairs unit with poor sound proofing.If you already hear complaints from existing carpet, it may continue or increase with laminate or possibly even a resilient surface (but see more below).My best hack for the upstairs in confronting some ugly carpet if you like laminate1) Look into a sound proofing underlayment (I have used Floor Muffler, pricey but have not gotten many complaints from downstairs, but upstairs tenant is quiet type...Others products are on the market.

I just did a remodel using vinyl; it is durable and much cheaper than hardwood or laminate. 

You can get good durable things that require little maintenance but that does not cost an arm and a leg. 

If you like the wood look but want the durability of tile, consider the new tile that looks like wood.If you do go with laminate, humor me and do it right: I keep seeing homes in which installers were too lazy to remove the baseboard from the walls.

granite is so inexpensive you can pick up slabs as low as $100 bucks .Granite is the new laminate ,shop around at some of the big wholesale stone places and find a  tile guy thru your local reia group ,laminate is not durable .

The floors in the Kitchen, LV and hallways were recently upgraded to CoreTec Plus Vinyl Plank to enhance durability and give it a more updated look: