I noticed this screenshot a few pages back and wanted to point out the twitching when falling to sleep - this is a very common side effect when using high doses of opiates. Its a bit like that feeling you get as you're going to sleep and jolt/twitch with a feeling like you're falling..? It happens a lot but especially when nodding out or just falling asleep on a fat dose of opiates. Its known as myoclonus or a hypnic jerk. All this is to say, Tuna is definitely still abusing opiates and is full of shit with her sobriety talk, she relapsed probably a long time ago to be back on the high and consistent doses that this kind of twitching/muscle jerking tends to show up at. Surprised she's never put the two together and realised its the opiates that are causing it but I guess it might be difficult considering the handfuls of other shit she's taking.