Clea… srsly… how? What is your winning strategy? (SPOILERS, PLEASE!)

I thought I had “finished” the game when I defeated the Paintress, but no. There was more. And I love it.

I played some more and then credits rolled. But wait! There was more! And I loved it.

And I have been having the time of my life until Clea.

I thought I was OP’ed because I have level 33 weapons and am level 87. My three main characters attack twice per round, and all accumulate level 3 Gradient and hit for a million HP damage every couple of rounds. I am at Tier 9 round 2 in the tower.

And I still can’t get Clea past half her HP before she gobbles up a character and heals back up to 100%! I can evade the attacks for minutes on end, but she always ends up healing faster than I can damage her.

Please, fellow Expeditioners, what was your winning strategy?

How do you manage her OP’ed healing?

And, how do I get her to spit back out the characters she (her summon) eats?

I am at my wits end after two day’s worth of gaming time stuck in this fight.

I’m reliving Malenia trauma…