She was a wonderful library advocate, active in REFORMA, the first Latina to chair the Newbery Committee, the Head of Children's Services at the Houston Public Library and before that, at San Antonio Public. She chaired the Newbery committee again in 2008, the year the Neil Gaiman was awarded the prize for The Graveyard Book.
I met her once at a Texas Library Association Midwinter Conference. As a library student I was allowed the opportunity to do some volunteer work for the chance to go to a children's author breakfast. She was greeting people before giving her opening speech and was very elegant and formal. She was shaking everyone's hand, almost receiving line style, and when I got the opportunity to introduce myself, one of my colleagues told me, "That is Rose Treviño! She's famous, in library circles!" I replied by saying, "I know, I know!" and then began gushing about how much I admired her work. I loved her enthusiasm for children's literature. I know she'll be greatly missed.