The hyperactivity disappeared when her 3-days' supply of additional (post-chemo) anti-nausea meds had been used up. They're steroids, apparently. I know she was told they may disrupt sleep & cause her to eat like a horse but, as she's not eating inordinately more than usual, we hadn't made the connection between the hyperactivity & the tablets.
She hasn't hit the wall recently, though, so maybe there's still some working its way through her system.
She's doing well & looks terrific. Brilliant!!