I've been keeping my sheet HP updated since I came back, but I realize its annoying to open all the sheets all the time.
As far as the current fight goes, Corretha started at 65/45 (Heart of Earth giving the Temp HP).
She takes 30 damage
She is healed by 26
. Overflow kicks in. 61/45.
Corretha takes 18 damage
She is healed by 65
. Overflow not triggered. 45/45.
(This was mostly for myself to ensure my HP was correct.)
I'll do a better job of keeping my current HP in my posts as well as updated on my sheet.