I think the matriarch would be plenty tough with 64 HP and maybe AC 16 with 1 attack and if she didn't suffer fall damage. You shoot her down and she PHASES to another spot as a reaction.
With her 2 additional phase spiders, and her army of babies plus no cheeses, that would be a plenty difficult battle. Larian giving her all those additional crazy attacks and 130 HP and jazz really OPs her in the fight. Then the cheeses are needed.
Same as true for the hag. She's way too OP unless cheeses are employed. Both fights are just way too imbalanced.
