Over the week of IMPACT Wrestling Knockout, Sienna was removed from the official IMPACT website and placed under the alumni section.
Back in January of 2018 at a set of IMPACT tapings, she was hospitalized due to experiencing short and labored breathing, along with severe back spasms/sharp pains at the top of her inhale. She expected that she had a displaced rib or a collapsed lung but found out that she has a blood clot in each of her lungs. At the set of tapings, she wrestled Allie and Kiera Hogan in matches, which would end up being her last matches with the company.
In April of 2016, it was reported that Kay had signed with the company. She made her debut by attacking Jade. She then engaged in a feud with both Gail Kim and Jade by joining an alliance with Maria and Allie.
On the May 17 episode of Impact Wrestling, Sienna defeated Velvet Sky with Sky’s job on the line. At Slammiversary, Sienna captured the TNA Knockouts Championship defeating Jade and Gail Kim after Marti Bell returned and attacked Jade. On August 25, 2016, in Turning Point Sienna lost the TNA Knockouts Championship against Allie in a Five–Way Match, also involving Madison Rayne, Marti Bell, and Jade.
On April 21, 2017, she defeated Christina Von Eerie to win the GFW Women’s Championship, making her the first woman to have held the Impact Wrestling Knockouts Championship and the GFW Women’s Championship.
At Slammiversary, the GFW Women’s Champion defeated Impact Knockouts Champion Rosemary to unify the titles, entering her second reign as the new Unified GFW Knockouts Champion. At the Destination X, Sienna retained her Knockouts Championship against Gail Kim due to interference from the returning Taryn Terrell. Following this, at Bound For Glory 2017, Sienna lost the Knockouts Championship to Gail Kim.
We’re told her contract with IMPACT came to an end whilst she was injured and she did no re-sign with the company.