Ochako had envied you, you had a good life, ur quirk was strong, and you had great wealth, more than momo. But the one thing that drove her to hate you, was when you started dating Izuku, it from her crazy. She was getting ready to confess to him but Izuku came running to her dorm saying how you two were dating, and her dreams were crushed. She stopped talking to you, and Izuku. You two were partnership for a assignment, you smiled at her when they announced it but she just glared in ur way