Lydia converts a 3rd-level slot to Cure Serious Wounds and heals herself for
(3d8+7)[15]. Then she moves to M/12.
Spoiler: Status (before healing)
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Lydia Constantine Human Cleric 7 LG HP 19 / 59
Speed ft
Init 6
AC 23
Fort 7
Ref 5
Will 8
CMB +8
BAB 5
+1 Longspear +9 (1d8 + 5, x3)
Longsword +9 (1d8 + 3, 19-20/x2)
Heavy Mace +8 (1d8 + 3, x2)
Str 16 (3)
Dex 14 (2)
Con 14 (2)
Wis 17 (3)
Int 12 (1)
Cha 8 (-1)
Hound archon 5ft steps to M/11 and full-attacks the chimera:
masterwork greatsword atk 1:
(1d20+9)[16], dmg
(2d6+3)[10], cc
(1d20+9)[16] (19-20/x2), cdmg
(2d6+3)[9]
masterwork greatsword atk 2:
(1d20+4)[9], dmg
(2d6+3)[12], cc
(1d20+4)[9] (19-20/x2), cdmg
(2d6+3)[13]
bite:
(1d20+3)[15], dmg
(1d8+2)[8], cc
(1d20+3)[22] (20/x2), cdmg
(1d8+2)[8]
Hound archon: 39/39 HP
round 3 / 7