Your mother got her crochet patterns from free crochet patterns available on Women's Magazines. While I was reading that lines, I was just thinking about my sources.
I am learning crouching from this community. And I have found it very much helpful. I think, if your mother had a Hive id, and she joined on #needlework community! Then the boxes in the storeroom where she stored Women's Megazines, must become empty. :)
RE: HOW MY MOTHER TAKES CARE OF HER NEEDLEWORK THAT LASTS FOR SEVEN DECADES : A CURTAIN ROSE DESIGN CROCHET