Griffiths, who celebrated her 18th birthday in March, has represented Wales at both youth and senior levels, having played for the Dragons in a Nations League match against Italy earlier this year.
After spending the latter part of the 2024/25 season on the bench as an unused substitute for the Reds, she is now eager to progress further after committing her long-term future to the team.
“I’m really proud of myself and my family, and I’m incredibly thankful for this opportunity from the club,” Griffiths remarked.
