re: Complicated situation. Advice appreciated. Will try to be brief.

Pain pills are definitely a possibility, especially considering her surgery. People on them aren't always as lethargic as you'd believe. Just don't be tricked into believing since a doctor gave them to her once upon a time that she shouldn't be responsible for her problem. For some reason painkillers are looked upon as more innocent than other hard drugs, but in truth she's no less a junkie.