Kowiz, try to equip your strongest ppl with a Snuff Charm.
It will protect you from her spells and FD's, but her normal Scythe atk still deals dmg.
So I would use someone like Karen who can strike from afar and still be 4+ spaces from Vanessa.
Vanessa scares me. @.@
I bet she kills ppl by hugging them. >.>
Snuff Charms ftw~
I gave one to Luna and Karen and owned Vanessa (lvl 66) at lvl 54 and lvl 55.
I loves them Lapis cheap strategies. xD
My tactic for handling the Nature Kopins are to use Sadie's AeroTwister on mob or that Sonic thingy on a solo target.
Note: Take advantage of your Lapis.
I equip all my main chars with either a HP+30% or HP.MP+20%
The HP.MP is for my Witches, and HP+30% is for my Ayano and Roland, whom are my only close-combaters.
HP.MP is also used for Karen 'cuz I only have 2 HP+30%'s.
My team for Hot Springs are:
Fatima (61): 2x Wizard Heart, 1x HP.MP+20% (Occasionally, I switch a WH with a Vim if I feel like being lenient on Kopins)
Luna (61): Same as Fatima except swap out a WizHrt for SnuffChrm on Vanessa.
Ayano (61): 2x HeroSprt, 1x HP+30%
Roland (62): 1x HeroSprt, 1x HP+30%, 1x Vim or HeroSprt
Karen (61): 2x HS, 1x HP.MP+20%
Sadie (61): 1x HP.MP, 2 WizHrt
And yea, I do in fact try to balance out my training of each character.
(Except my non-Spa battlers who are all lower than 40, though Althea is 55 'cuz I plan on using her in Springs soon.)