“I fear she’s on meth — I’ve been praying someone would make it public and that she wakes up,” Federline, 45, told the Daily Mail Saturday. “It’s terrifying. She is the mother of my boys.” “Britney may die like Amy,” Jamie, 70, told the outlet, referencing the English singer, who died of alcohol poisoning at age 27 in 2011 after years of substance abuse. “Compare her wellness then and how she is doing now,” added the Spears patriarch, whom Britney, 41, accused of abuse during his time as her conservator.