(well, she can't really do much as her foot is broken. She can probably stim as you do though. I suppose I could try and get some sleepy stuff in her, even her current pain meds have sleepy. Thanks! I've never really had trouble getting her to go down before, not sure why she's so stubborn today..)get them to expend a lot of energy in a way they love, and they'll surely be tired. some suggestions could be dance, runnin, power singin, jump rope, and maybe just release a lot of stim energy if they stim such as hand flappin as i know that can build up when there's no safe environment to release that energy in.
a more straightforward approach is make them some sleepy-time tea (make sure it doesn't conflict with their meds if they take those as sleepy-time teas are the highest likely tea to react meds), get them into pajamas, and lots and lots of blankets provided.
both of these methods combined could be the most effective. i hope this helped!