Mother Miranda (Memories' Edge)

Chapter: SoR3 · Deep Stratum · Memories' Edge
Where: Memories' Edge, at the end of the Deep Stratum. Last safe room before it: the Pit Laboratory (typewriter, 42 handgun rounds, 19 shells, a First Aid Med and a Bunch of White Sage).

Weak point

Your power stuns her; then the M1897 point-blank. Guns barely hurt her while she flies.

She fights mostly in winged form, with brief spider-form pounces. For this fight Rose gains three powers: dodge (free, with brief invincibility), absorb projectiles just before impact (refills slots) and the Megamycete attack (3 slots, a short-range root thrust that stuns her "for a good while"). Handgun Ammo (10) keeps appearing on the ground throughout the fight.

Reward

The end of Shadows of Rose.

No published HP figure. Sources disagree on absorb: +1 slot (a wiki) or +2 (Game8). One Hardcore player counted 8 stun-and-shotgun cycles at normal difficulty rank and 9 at the highest (unconfirmed). TheGamer rates her easier than the Executioner: a big arena and free dodges.

Hardcore: one hit leaves Rose in critical condition; save the Pit Laboratory's healing and ammo for this.

Step by step

Absorb her projectiles (a mould trail that glows and rushes you) just before they hit to fill 3 slots. Later she throws several in a row.
Dodge sideways from her spinning dive and the close wing spin. The best moment to stun her is right after the spin.
Use the Megamycete attack up close and unload the M1897 while she is stunned. Don't waste bullets or power while she flies.
Darkness: she swims under the ground, fakes, then lunges with her arms spread: dodge the real lunge. She also bursts from under you (black mould appears first).
Mould tornado spitting projectiles in every direction: keep moving between the shots and dodge.
Ending: in a red-sky arena she fires projectiles you can't stop and Rose falls regardless (heal first if you can). Ethan lends her his power: approach, follow the prompt and use your power to finish her.