She made her Grand Slam main-draw debut at the 1995 Wimbledon Championships, where she had a win over Katerina Maleeva.

Her best performance on the WTA Tour came at the 1996 Budapest Open where she ended runner-up, losing to Ruxandra Dragomir.

[1] She represented the Austria Fed Cup team in one tie, a 1996 World Group playoff against Germany, in which she featured in the dead rubber doubles.

[2] Partnering with Barbara Schett, the pair beat Sabine Hack and Christina Singer, to give Austria its only win of the fixture.

Married to tennis player Lars Rehmann, Schnell is now based in Germany.