Are you talking about when Godfrey shot her? Godfrey was a threat to both Gilneas and Sylvanas, he was a good villain, he only had loyalty to himself.
While, I do think Sylvanas threatening to turn Lorna into a Forsaken was heinous, I think that was just an empty threat on Sylvanas’s part. She makes a lot of empty threats, we as a player knew that Darius would likely surrender before he allowed Lorna to be hurt, the love he has for his daughter was evident on both sides of the fight and Sylvanas was counting on that. Lorna would have made a badass Forsaken though, I love her and I wish she actually had more screen presence. Some of the coolest WoW characters are Gilneans and they never get the spotlight they deserve, that’s why I loved playing Stormheim as Alliance.
This is just my personal opinion, but I don’t think Lorna was in any real danger, Sylvanas was banking on Darius’ love for his daughter for an easy victory. Godfrey was a rogue agent who proved to be a jerk no matter which faction he feigned loyalty too, and the most tragic thing about when Sylvanas got shot by Godfrey was that she assumed his loyalty. She made a critical error and died a second time for it, right after she escaped the Maw she went right back there, that gives me a little bit of a chuckle about the irony.
Imagine the jailer now being like, “Back, so soon?” Annylhide just shaking her head in frustration that she sacrificed herself for Sylvanas only to have Sylvanas immediately end up back in the Maw.