BANGKOK: A mother from one of Thailand's wealthiest families formally withdrew her "ungrateful child" lawsuit against her son on Wednesday (Jul 8), a Bangkok court said, after he accused his elder brother of sexual abuse.Jeeranuch Bhirombhakdi, a third-generation member of the billionaire family behind Thailand's Singha beer empire, dropped her suit against her son, Siranudh "Psi" Scott, according to a statement from the civil court that was hearing the case.She brought the suit in February under a measure known as the "ungrateful child law".It allows parents to revoke gifts if their offspring are deemed ungrateful, physically abusive, neglectful in old age, or responsible for serious reputational harm. Prompted by his mother's suit, Siranudh revealed accusations in May that he had been se