How are y'all running Fjorm this week?

I have a +9 Fjorm, kitted out with Warding Breath and a +8 Zelgius Panic Ploy S-rank assist. She has 39 def and res before buffs, pumped up to 43 if she is initiated on due to Warding Breath and my lousy Def Tactic level 2 seal. I'm planning on running her with an attack tactic bot, and then either an Eirika or a Lucina for added physical damage.

My question is, what would make her survive four enemies for the longest? I have an aether lying around ready to be used on someone, and that seems like a good bet for survivability. She has Glacies and Ice Mirror at the moment, but I'm not sure Ice Mirror is much good at the higher levels of arena play given the dearth of mages. Glacies will obviously let her get some kills, but Aether might actually keep her alive.

And for the B slot, I'm not sure whether to keep Shield Pulse, which would be real good if she did survive some specials, or get her a Quick Riposte and a Close Defense seal so that she's sitting at 48 defense and res to deal with every stinking armor and dragon I have to fight.

Thoughts? What are other people running?