Her production jumped up to 25 points in 29 games the following season, leading Yale in scoring and her 21 assists the third-highest single-season total in the university's history.

[3] On the 1st of March 2018, she signed her first professional contract with the team, and played the remaining two games of the 2017–18 NWHL season, as well as the Pride's playoff quarterfinal loss.

She had previously spoken out in favour of the 2017 American National Team strike, stating that "these women deserve far better treatment and more compensation than they have gotten in the past".

[10] Souliotis has been noted both for her powerful shot and her willingness to shoot on net, as well as her defensive reliability, consistently ranking among the best players in her league in plus/minus.

[11] She has compared her style of play to that of NHL defender Torey Krug, while Pride general manager Karilyn Pilch has stated that she "brings grit and great poise to our defensive zone.