-Spd +Res Brave Celica, how can i salvage?

Give her a speed seal. She reaches 39(?) speed with Royal Sword equipped, and she still has her B skill.

She's fine.

Nope, garbage. 39 speed w/Royal Sword is way too low.

If you really mean salvage, fodder the death blow 4.

If you want to use her, one way is just pretend she doesn't have a spd bane and let Double Lion do the work. She will still quad pretty much anything that can survive two strikes.