If I remember correctly I don't have the Holy Book of 5e beside me and pishposh to lazy to google it but isn't concentration con based, have to roll half the damage amount or something??
My problem if I remember above question correctly is not her dying, but the fact she's like a two year hyped up on Monster Energy drinks, 'her focus/concentration, needs more focus/concentration' currently I've noticed the fact she is sneezed upon by someone four miles away and loses focus/concentration. Meanwhile near naked Gale has in my playthrou... meanderings has no problem for the most part keeping his focus. Also the fact that her sacred flame as it stands is currently nearly useless more often then not failing, taking away one of the few cantrips at her disposal (not really paid attention to her cantrips.) for dealing damage. Even with heavy armor feat aoe damage causes her to lose focus, and these bypass ac.
In short she needs a rework, or for some reason just blows in my play testing. Since I'm being lazy I'll let you all take over until my brain starts up again.
AC for her armor proficiency isnt based on dexterity, its just a flat number. I had her at 18ac, kept her relatively far back, gave her a hat that helped her on dex saves, bumped her con up 1 on 4 to help con checks, and made sure to engage or kill ranged enemies early and often with the rest of the group. Casting water on her or using ink cloud would give her protection from most targeting of fire and stuff. There are also some rings and necklaces that help with it all too. She was an absolute beast of destruction and CC/Buffing
