For Preschooler with ALL, Sisterly Bond Is a Source of Strength

<p>The first time Ashley Bernath dropped her then-three-year-old daughter, Charlie, off at preschool, there was no hug, no tears, no long goodbye &#8212; just a quick “see you later” and a full-steam-ahead dash for the classroom. Charlie’s excitement that morning in September 2025 was understandable. She had spent the previous 15 months in active cancer ... <a class="read-more" href="https://blog.dana-farber.org/insight/2026/03/childhood-leukemia-sister-bond/" title="For…