Mary Anne Blanton holds a photograph of her mother, Tammy Blanton, who died of opioid use, in Peoria, Arizona, on April 15. | REUTERS Tammy Blanton’s life unraveled after years of taking opioids initially prescribed for migraines, according to her daughter Mary Anne, who says the drugs left her mother isolated, unemployed and estranged from her family. Tammy was given opioid prescriptions by multiple ⁠providers for decades — receiving more than 200 pills a month, on average, during one two-year period — and a medical examiner later concluded that oxycodone and extended-release morphine, along with alcohol and anti-anxiety drugs, contributed to her accidental death at age 58 in 2017. When Purdue Pharma sought bankruptcy protection in 2019, Blanton believed her mother’s story would qualify her for compensation. Purdue, whose painkiller OxyContin has been widely blamed for fueling the opioid crisis, acknowledged misconduct and pledged to compensate those harmed.…