She's lucky to have you as a friend. Others have given great advice about the home -- have you talked about what kind of bed she will have? You might look at your linens -- PALS frequently do better with light breathable layers so I would swap out any heavy quilts, blankets or spreads. I would also consider anything that might affect sound sleep: climate control and not having any vents that blow directly on her (does she use BiPAP? if so, she'll need a table, outlet and distilled water for it), feline/canine alarm clocks, bright light in the morning, etc., just as you would for any guest. She will also need a power outlet/space to charge her wheelchair at night, if it is a power chair.
Since she'll be with you for a while, you may have already made a list of possible outings based on scouting out their wheelchair access. I don't know your mutual interests, but from my Jersey years, there are certainly options. So I wouldn't push anything on her, but have some possibilities ready if/as she wants to explore.
Not to be macabre, but rather prepared, I would also put on the frig/in her partner's phone so everyone has, the location and number of the UMDNJ ER in New Brunswick, the closest ALS center to you, and advise her to bring a copy of whatever directives she has in place, as well as a brief medical history if she doesn't travel with one. If she has rx she might need to refill while there, I would want to know which pharmacy chain she uses, in case there's not one nearby.
Have fun and take a couple of selfies, even if she demurs, as well as pics of your surroundings. You will want to remember the time you spend together.
--Laurie