Amy Winehouse's mother didn't ever expect the late star to make it into her 30s.Â Janis Winehouse insists she "wasn't surprised" when her daughter died of alcohol poisoning in July 2011 aged just 27 because she couldn't ever imagine the 'Rehab' hitmaker, who would have been celebrating her 30th birthday in September, as an older woman.She said: "When I think Amy would have been 30 this year, it doesn't feel right."I'm not saying I always foresaw this but I wasn't surprised."I couldn't see Amy as an older person. She was this young girl who exploded into the world like a firecracker and then it was, 'OK, I'm done -- I'm off'. Amy was never meant to be 30."Janis believes the singer was "bored" of performing the same songs at her gigs, and insists the 'Back to Black' hitmaker - who battled alcohol and drug addiction - went through life thinking she was "immortal".She explained: "Amy was getting there. She had kicked the drugs but I also know she was bored -- bored with doing the same gigs and same music."I would definitely say Amy was bored with life."I believe in life after death and that when Amy passed she probably met with her grandma, who said to her, 'You see, I told you this would happen! I told you to stop your mad way of life.'"And Amy probably said, 'Oops, I didn't mean to, do that.'"I think she surprised herself. She probably thought she was immortal."Janis - who suffers from multiple sclerosis (MS) - let Amy eat what she wanted because she didn't feel strong enough to fight her, but the 58-year-old retired pharmacist thinks her daughter often looked like a "concentration camp victim" because she was so thin after going on crazy diets.She added to The Sun newspaper: "Her attitude to food was also very upsetting because she was always trying a dreadful diet."She'd say, 'I found a really good diet Mum, I chew the food and spit it out'. So she'd get her favourite KFC every night and spit it out."She lost 2st until she was stick thin, like a concentration camp victim. I don't know whether I would have been a different mother if I hadn't had MS."I would certainly have had more energy and more fight against Amy."