You know, this particular ending would be a lot better if it was a quest instead and actively trying to find a 'cure' for her in Avernus. Something with Zariel or some dwarf that knows how to work around infernal machines.
I kinda dislike endings that give you the 'rest is up to your imagination' feeling.
I was sort of hoping that ending was really a cliffhanger for a future expansion or even plans for a BG4 set in Avernus. Though I didn't expect credits to start rolling quite that quickly.
"Often forcing his victims to eat their own lips, he was caught and imprisoned for tax evasion." -Yellowbeard.