Dodging only works to a limited extent, especially on the higher difficulty levels, due to the unpredictability of the attack - try to block it instead. However, her dive attack is dangerous - sometimes she stops at one point in the air and then rushes at you at blazing speed. She forms three orbs which hover above her, which she then lights on fire. Most of the time she'll be throwing burning fungal orbs at you. Hide behind the tall roots on her flanks - they'll protect you from the explosion. At this stage, she ignites a large megamycete mass to cause an explosion. Sometimes she sprouts gigantic megamycete roots to her left and right.
She performs melee attacks in this form, but you'll be able to dodge them easily if you keep enough distance. Tips for the fight: Miranda will constantly change her shape during the fight, allowing her to swap between different attack patterns. Squeeze through the gap between the fungal vegetation at the entrance to the ceremony site to begin the final battle against Mother Miranda. All paths are now blocked by giant fungal tentacles, and your only option is to take the route to the ceremony site. The Duke will take you back to the altar after you have killed Heisenberg. Warning! Spoilers for the end of the game!