Holly Bryer said nobody wants to think about dying. But after witnessing her mother’s painful death, she said it’s time to address the taboo topic.Her 70-year-old mom, Ione “Cheryl” Bryer of Raynham, suffered for 10 days before succumbing to leukemia two years ago. Holly spoke about her and the need for an end-of-life law in Massachusetts to the Herald’s Meghan Ottolini: