What is a short summary of the story, The Summer Solstice, from the collection, The Woman Who Had Two Navels?

The Summer Solstice depicts two Filipino festivals and rituals--the St. John's day parade and the Tadtarin rituals. The former represents masculine pride and the glory of summer, whereas the latter is feminine, sensual fertility ritual that is deeply misunderstood, mocked, or even considered appalling or dangerous by those who do not participate. When Doña Lupeng decides she will attend the Tadtarin ritual herself, she taps in to a visceral, ancient connection to her womanhood that grants her new strength even against her husband, though it is unclear what exactly that strength can accomplish under patriarchy.