Spook

Yep

You might find this useful
https://fireemblem.gamepress.gg/q-a/repost-i-pulled-x-halloween-unit-what-do-i-do

I'm surprised GamePress didn't show +res as a good boon.

I got her too with the same IV. Spd is an ideal bane, and Res is pretty good to balance out her defensive bulk. So, I can see that spread working well for her.

Yes, it's better than neutral, especially for Distant Counter builds.

I got the same IV’s and she’s a beast.
Supported up with L!Tiki - insane combo!