Aspergirls by Rudy Simone, might be a book your Mum might relate too, dunno. You would have to read it yourself and see if you think so. I am thinking that her reading rather than being told might be a way to get the info to her. You would know her better than me. Often an Aspie would need time to adjust consider etc without emotion (in the form of a person there) or time pressure. Just a thought.