I work at a blind school and we offer knitting as a craft in the evenings

Pottery/pottery wheel?

Felting is lovely too

Perhaps a loom

My vision has come and gone several times throughout my life, but I've always been able to knit, even with no vision. I can crochet with thicker yarn and larger hooks, but it can get tricky finding the stitches when I'm "blinder". Staying away from dark yarns help with both.

Crochet and knit are good options. My mom learned when she was ten and totally blind. She taught hundreds of others who were losing or had already lost thuer sight later in life. It's about texture and movements rather than seeing what you're doing.

Macrame is fun.

Weaving is another option. Again it's the texture that's the most engaging.

As for colors, she remembers what they are. Describing her options or finding colors she requests is part of you supporting her art.

Before covid, taking a trip to a yarn store would be an afternoon adventure. There used to be sample catalogs you could get ftom yarm companies. No idea if those still exist but they were loads of fun.

You can also put out requests for samples to knitting or craft clubs. They can send labeled chickens (yarn scraps) for your mom to explore and then you can buy the ones she likes in the colors she wants.

I think you could learn knitting and probably crochet by touch.

She may also be able to cross stitch still, but with lower count plastic canvas, where you can feel the holes. You can even make 3D models that way (our Christmas tree angel when I was a kid was made with wool and plastic canvas). I think most kits with plastic canvas will be for kids, but with the internet being what it is, you can probably order the needed supplies separately for whatever project she wants to try.

I knit and think it’s a good option. It can start out simple but there lots of extra things to learn if/when wanted

Oh!! Check out r/crossstitch!! They have a LOT of accessibility posts and magnifying stands that lay across the lap

I've been blind all my life and have tried all sorts of crafting types. My main focus is pom-pom making at the moment using plastic pom-pom makers and some nice soft yarn. I also use cross-stitch sheets as a backing and stitch little scraps of different materials onto it a bit like a collage. My sewing is mostly self-taught and very very basic, but it's fun and at the end of it you get something good to feel. My thinking is that the stuff I make might not look great, but they should make for great fidget or worry aids, or even something to play with to improve dexterity.
I give my work out to people I meet who I think need a pick-me-up etc or even just if I like someone.
I make jewellery too, my favourites are ceramic, stone or glass beads, but wood is ok occasionally.
I'm really after a trip to a craft shop now...! Like I said I'm self-taught and love to experiment and try new things.
I never did get the hang of knitting, and haven't tried crochet. I know blind people who do both though so don't despair.

What about jewelry making?

Some people do crochet or knitting - you just need to count the loops on the needle.

Some do sculpture, some do quilling (rolled papers). I know some people who do woodworking who are blind. Some make art with found objects. Some do gardening - there are plenty of possibilities.

What about beading or clay.

With beading as long as she has the beads in separate jars or containers, one color to one container, she should be good. And label it.

Sculpting with clay is a great touch-based craft! It can get a bit messy but it’s fun

Perhaps origami? There's a few places with nonvisual instructions online.