She was part of the squad that won the first Norwegian European Women's Handball Championship in 1998 as well as the first Norwegian team to win the 1999 World Women's Handball Championship in 1999.

She played for the clubs Jaren, Lunner, Bækkelaget, Toten and Ikast.

She played 201 games for the Norwegian National team and scored 1003 goals,[2] an all time record.

In 2022 Grini was a participant of The Farm Celebrity, a reality show on TV 2, where she reached the final week.

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