This is so sweet. Eve knows her own faults, and even though she's normally so stubborn about doing things on her own, she finally has a dream to fight for that has shown her the power of relying on her friends and family. Each of these relationships are interesting in their own unique way, with the Eve/Aoi and Eve/Ichina ones being the most dynamic, but her found family and her lost family are also equally important in giving her the strength to achieve her promise to Aoi.
Klein and Lily gave her a home when she didn't have anywhere to go, and a reason to keep on living and fighting. Aoi awoken Eve to how much wider the world of golf was than she had given it credit for, and gave her the desire to get away from the mafia, Ichina taught Eve the power of relying on someone other than yourself, and her regained memories of Eleanor and Kazuhiko helped Eve remember who she was and gave her the strength to become a pro and know her place in the world