Her medical history, combined with this behavior, if anything seems to lean towards her just having anger issues for a really long time.
There's also no evidence this is an event of psychosis. She was fully aware of her surroundings and events, as she knew why she was angry. The only evidence I see of her likely dying was an adrenal response because it is not that easy to rip out hair, especially at that age. And even that's a stretch - most likely she already had clotting issues and a weak heart, and the anger finished her off.