She always spawns if a certain number of people enter her area at the same time - so if you want to avoid spawning her, just send people through her room one by one as she's not needed to finish this trial =)
Is that room after the Heartstriker? Just trying to figure out shortest way to spawn it. but have been through 2 boxing all the rooms without spawning it.
iirc she spawns in the first big room, right after crossing the bridge, loc should be around 0, -2000.
Been a while since I've done this, but I think several Cragbeast Hatchlings spawn first when you enter her area with 3 (?) people at once. As soon as all those are killed, the Enraged Maternal Cragbeast Matriarch spawns in the middle of the same room.
Gem of Bolstered Power MAGIC ITEM LORE ITEM NO DROP AUGMENTATION Augmentation Type: Fits in all slot types. Slot: EAR NECK FACE HEAD FINGERS WRIST ARMS HANDS SHOULDERS CHEST BACK WAIST LEGS FEET PRIMARY SECONDARY RANGE HP: +30 MANA: +30 Required level of 63. WT: 0.0 Size: TINY