"It's always good to have really close games, because going into the World Cup Qualifiers [Asia Cup], that's how we're going to get better," Cocks said.
Cocks had a standout game, shooting a game-high 27 points to go with five rebounds.
Her efforts were assisted by 13 points, seven rebounds and three assists from Antonia Edmondson, while Rebecca Ott was a force off the bench with a team-high seven rebounds.
The win wraps up a strong William Jones Cup for the Tall Ferns, who continue to build towards the Asia Cup at the end of the month.
They'll now head to Singapore for a series beginning July 11 and Kereama is happy with his side's progress.
"Although we have a lot of experience, we have a lot of debutants as well and we were very pleased with the performance of our veterans, as well as our younger players," Kereama said.
"For us, it was a very successful tournament, but we'll make some adjustments and, of course, we've got lots of improvement to make."