women - stupidly stubborn or stubbornly stupid?

This is about three women.

ST can't take spicy food. When in Thailand, day after day, she attempts to order the papaya salad, 'mai-pad' (non-spicy). Day after day, the papaya salad that was served.... STILL TOO SPICY. EC only laughs at her stubbornness.

GW is allegic to fish, and fish cake (and otah, get the pic?). Few days ago during her visit to sg, she took fish cake. Ended up itching all over. EC n ST brought her for katong laksa today. She ate up the fish cake in the laksa and stubbornly ate the otah claiming that there's also otah in thailand. Minutes later, she started scratching herself.

EC laughed at ST and GW at their stubbornness. But she's no exception. While shopping for stuff for GW to bring home, EC bought dried mangoes. Mangoes in vinegar gives her rashes she calls continents. Dried mangoes are only slightly better. Just need a larger dosage to trigger the formation of continents. EC stubbornly bought the dried mangoes. ST and GW had to help her finish eating while walking.

WOMEN... stupidly stubborn or stubbornly stupid?