[1] Besides Finland, she has played in Nicaragua, Belgium, the United States, and Italy.
During the winter periods she played in Belgium, the United States and Italy.
Lappi-Seppälä earned 21 caps for the Finland women's national team.
[6] In 2019–2021 Lappi-Seppälä was the head coach of FC Honka in the Finnish women's top division Kansallinen Liiga.
[6] In February 2023, she was appointed the manager of the Saudi Arabia women's national team.