Maki was Tala's people, if her father knew this, Datu Pita wouldn't forgive him. He was her accomplice after all. If he would reveal his alliance with her and her schemes to Datu Pita. She was certain that Maki would die in her father's hands.
Tala was planning on killing Yanarym together with her father but she thought it's better to use her unnecessary veneer beauty. If she offers her to Datu Achis, maybe this lovesick man will get over his bride. Also, Tala could keep Achis under control if her umbo became his wife. Any man would go crazy for her, take Maki as an example.
"...alive? Dead?" Achis, actually, was a man who had gone crazy for Yanarym long before Tala could think of it, had his mind in chaos.