Maria Santos incorporated Lakbay Travel OPC, a One Person Corporation engaged in domestic tour operations, with herself as the sole stockholder and sole director. Over the course of two years, Maria routinely transferred OPC funds to her personal bank account to cover personal expenses such as her mortgage payments and her children's tuition fees. She likewise used her personal credit card for corporate purchases without maintaining separate ledgers for corporate and personal transactions. When Lakbay Travel OPC failed to pay its PHP 2.5 million outstanding debt to supplier Armando Reyes for tour packages and accommodations, Armando filed a complaint and sought to hold Maria personally liable for the unpaid obligation. Maria argued that as the sole stockholder of an OPC, she is shielded by limited liability and therefore cannot be made to answer for corporate debts. Is Armando entitled to hold Maria personally liable? Decide with reason(s).