I was riding Shadowmere near Alftand and I accidentally fell into that canyon near the abandoned tower. The fall was enough to kill Shadowmere.
I have done a lot of quests and other things such as fast travel, waiting, and sleeping so I am wondering if that interrupted his respawn. Also if I come back to that point before he respawns, is that bad?
Can Shadowmere just go away and never come back after his death?
I tried waiting in-game for 11 days in Solitude and then returning to Shadowmere's death point, but it did not work.
I do not want to use script commands because I consider that 'cheating' and I don't want to cheat.