I'm glad that you had that young woman show you and the other girl that she did genuinely care. It reminds me of something that went on with me when I was in university - I was volunteering at a private school my neighbour worked at during the summer, just to have more experience in a school setting. There were these two little boys that I got along with and who were always coming up to tell me things and to play with my during their breaks. A few weeks in, my neighbour let me know that it took everyone else that entire year to get the boys to even say more than word or two to them, and that everyone was shocked at how easily those boys opened up with me. I had no idea! I was glad that I was able to be a positive person in their lives.