Toulouse was raised in Arlington, Virginia where she played club soccer for Arlington Soccer Association. While playing for Braddock Road Club the team won six Virginia State Cup Championships.
After graduating high school she chose to attend the University of Virginia where she played four seasons of soccer for the Cavaliers. The team reached Round 16 of the NCAA Tournament every year that she was there. Her freshman year she played in 20 games and followed that up by playing in 23 games and scoring one goal her sophomore year. Her junior year she started 17 games and played in 21 scoring one goal and two assists. Her junior year also saw her make the move from playing as a forward to a defender. As a senior she appeared in 22 games and started in all but one of them. She scored one goal and one assist.
After college she went to Sweden to play for Ragsveds IF, a fourth division team. She played in 20 games for the team and scored nine goals which included two hat-tricks. In 2013 she returned to the U.S. to join the Washington Spirit for the NWSL's inaugural season. She played in 13 games for the Spirit and started in 9 games.
She was the Dash's tenth pick in the Expansion Draft. A young defender she has played for Dash Head Coach Randy Waldrum before as part of the USWNT U-23s and will fit perfectly into the system he looks to implement in Houston.