Karen-

Hugs to you and Mom (and I think it's a perfectly normal coping strategy).

From my family member experience, the heads get very sensitive when they lose hair from chemo. So, think SOFT. Cashmere or cashmere blend, some sort of microfiber, a very soft cotton blend. I also wonder if alpaca would be nice. I think a little luxury couldn't hurt Socks would be nice. I would also think about making a hood/scarf combo that goes a little further down her neck to protect from drafts.

Take care and good luck to you both!

CA