Hydie graduated with a Bachelor of Arts in English and History from the University of Auckland. Children's Literature and New Zealand Literature were her favourite classes. She also has a Graduate Diploma in Teaching (Primary).

When not working or writing, Hydie loves to spend time with her family and friends and go for walks in nature. Hydie lives in Auckland with her husband and her dog Beau. She has one daughter and a stepson.

As a child, Hydie spent a lot of time in the King Country of New Zealand on her aunty and uncle's sheep and beef farm. The days were spent out horseback riding on the farm with her cousin and in the early evenings she would read all the children's books that her aunty had. This was the beginning of Hydie's love for children's literature.