She won the British Ladies Amateur back-to-back in 2004 and 2005[1] Stahle was born in Lund, Sweden, into a family with a strong golfing background.

[5] In 2004, she won the St Rule Trophy at St Andrews, Scotland,[6] the Beirut Café Ladies Trophy on the Swedish Golf Tour (at the time named the Telia Tour)[7] and won the Smyth Salver as leading amateur at the Weetabix Women's British Open.

[10] Stahle played collegiate golf 2004-2005 at Arizona State University, where she had one of the finest freshman seasons in school history.

[9] She also won the Golfstat Cup, which is given to the player who has the best scoring average versus par with at least 20 full rounds played during a season.

[14] Stahle became the first player in 30 years to successfully defend the Ladies' British Amateur title, when she won again in 2005, this time at Littlestone, Scotland.