As Elsee drinks the potion, the grick reaches up a tentacle to slam it out of her hand. It then proceeds to attack, flailing out its tentacles to bask and batter both Elsee and Naga, then biting into Elsee with its tiny yet oh so sharp teeth.
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The potion healed 14 damage, and the grick gets an AoO. This damage will be healed by the potion.
AoO on Elsee:
Attack: (d20+3)[18]
Crit: (d20+3)[10]
Damage: (d4+2)[6]
Attack on Elsee:
Attack: (d20+3)[21]
Crit: (d20+3)[22]
Damage: (d4+2)[6]
Attack on Elsee:
Attack: (d20+3)[16]
Crit: (d20+3)[5]
Damage: (d4+2)[5]
Attack on Naga:
Attack: (d20+3)[7]
Crit: (d20+3)[5]
Damage: (d4+2)[5]
Attack on Naga:
Attack: (d20+3)[20]
Crit: (d20+3)[21]
Damage: (d4+2)[5]
Attack on Elsee:
Attack: (d20-2)[16]
Crit: (d20-2)[1]
Damage: (d3+1)[2]
Most of the tentacles barely miss Elsee, but one sends her sprawling. Naga isn't so lucky--he manages to dodge one tentacle but the other one lashes against his chest. They hear ribs crack, and Naga immediately begins yelping and crying out in pain.