She's had codeine so that when she fails her urine test she'll still get her methadone. It's one of the blags that addicts use. Opiates will show up in her urine, but as she's been prescribed them by a hospital she'll be given a pass and still receive her methadone. This now gives her free rein to buy codeine and other opiates on the streets, as it will be in her system anyway. She most likely used her birth name Amy and her mum's address. The address registered with the drug team won't be her mum's address. She could even have given them Ste's address. A person in GENUINE recovery would divulge that they're in recovery and refuse opiates. She's not remotely in recovery and the last few remaining idiots who believe she is (yes, I'm talking about Carol Ballata/Carolsquares) need to give their heads a wobble. She's used the free taxi service to drop her at the hospital instead of home.
Of course, she could be lying and she's simply bought the codeine from the streets, using the hospital visit as a cover. Drug addicts are thieves, liars and selfish manipulators. They will "shop around" various clinics, hospitals & pharmacies to be prescribed or buy codeine.
she sounds like someone who has been dehydrated for 100 thousand years! 
