She told the club's website: "It's been seven great years. I came to the club in 2017. It was a new journey for me, coming to England, to London, playing for such a big club as Chelsea. I think when I look back at all my years, it's been ups and downs but it's been more ups than downs - it's been a hell of a ride."
After breaking down in tears and admitting she was, "So bad at this", Mjelde added: "Thank you from the bottom of my heart. It's been the best years of my life. Thank you."