You're looking for indoor plants, am I correct? There are many that thrive in lower light situations, but all plants need some
I have a Spathiphyllum, sometimes called a peace lily, growing in my living room. Although the room has large windows, the plant is on an end table in quite dim light. Currently, it's blooming. IMO, the most difficult thing about caring for this plant is to remember that it likes moist soil. I think it would be quite difficult to overwater it, unless you kept it standing in water in a pot with no drainage holes.
I have grown African violets on the sills of north-facing windows. I have ferns and a palm tree living happily in my bathroom, which has a northern exposure.
Do you have an east or west window? Many different plants would be happy there.
Do you have space in your new place to provide supplementary lighting for plants? If so, she might be able to maintain a small garden of salad greens, and perhaps a few herbs. I have plans that I found online for one built of PVC pipe. Very simple. I plan to build one or two of them this winter. Of course, if you prefer, you could always buy one ready-made, but I've not been able to find one I considered to be sturdy enough.
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams