The nurses she once assisted have welcomed her to their ranks - including Kudzie Hove and Diana Fowler in the acute medical ward.
"We are very proud of her and looking forward to having her back on the ward as a fellow registered nurse," said Ms Fowler.
While studying, Ms Linton received a Second Chance Education award from the New Horizons for Women Trust - a one-off grant to help with study and living expenses.
Each year the trust provides a number of second-chance education, research and specific purpose awards. The education awards are for women who take up tertiary studies later in life to achieve their first tertiary qualification.
Ms Linton attended the UCOL Whanganui ceremony with 329 other graduates two weeks ago.
Among those graduates was her son Jaydon, who completed the certificate in exercise and sport performance. Younger son Seth, 14, said he was proud of his mum and took time out from school to attend the graduation.