Wassell additionally performed for Loughborough Lightning most lately within the league, alongside persistently representing her nation over the previous decade.
She made her debut in 2014 and set a brand new report by enjoying 54 consecutive worldwide matches, a run that resulted in 2022 due to harm.
Wassell mentioned becoming a member of Trailfinders marked a “new chapter”.
“I’ve had a little bit of a tough season to say the least, and I simply can’t wait to get again,” she added.
“I need to push myself, be challenged with the competitors on the membership, but additionally get pleasure from it.”