[2][7] Kay and Norrell engaged in a feud that lasted most of 2009,[7] including a Falls Count Anywhere match at Summer Standoff in August 2009.

[14] Kay debuted in Absolute Intense Wrestling (AIW) in April 2010, losing to Jessicka Havok, and the following month, she lost to Angel Dust.

[18] In January 2011, Kay debuted for Women Superstars Uncensored (WSU) at The Final Chapter internet pay-per-view in a loss to Jamilia Craft.

In August, Kay earned her first win in WSU when she was victorious in a four-way match against Marti Belle, Tina San Antonio, and Niya.

On March 3, 2012, Kay and Stephie won the WSU Tag Team Championship by defeating the Soul Sisters (Jana and Latasha).

[19] As part of a talent exchange, The Midwest Militia began competing for the Canadian promotion NCW Femmes Fatales (NCWFF) in 2012.

[20] At NCWFF's ninth show in July 2012, the Midwest Militia defeated Courtney Rush, Xandra Bale, and Cat Power in a six-woman tag team match.

At Shine 8, Valkyrie defeated Amazing Kong, Angelina Love, Christina Von Eerie, and Yim in an eight-woman tag team match.

[29] When Kay interfered in the main event match between ally Rain and Love, she was suspended by Lexie Fyfe for 90 days and removed from the tournament.

[40] On July 7, 2013, Kay started her first tour of Japan with the World Woman Pro-Wrestling Diana promotion, losing to Keiko Aono in a singles match in Kawasaki.

[2][41] On August 4, Kay and Crazy Mary Dobson unsuccessfully challenged Aono and Yumiko Hotta for the WWWD World Tag Team Championship.

On the April 24 tapings of Impact Wrestling, Sienna defeated Madison Rayne to become number one contender and face Jade for the TNA Knockouts Championship at Slammiversary[45][unreliable source] On the May 17 episode of Impact Wrestling, Sienna defeated Velvet Sky with Sky's job on the line.

[46] 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.

[48][unreliable source] On January 6, 2017, at the event One Night Only: Live!, Sienna unsuccessfully challenged Rosemary for the TNA Knockouts Championship.

[51] In July 2018, Sienna's profile on the roster page of the Impact Wrestling website was moved to the Alumni section, confirming her departure.

[56] Throughout her championship reign, Kay went on to fend off title contenders such as Heather Monroe,[57] Kacee Carlisle,[58] ODB[59] and Rain.

[62] On September 29, Kay had her first match in 8 months as she was on hiatus due to the COVID-19 restrictions, defeating Nicole Savoy on UWN Primetime Live.

[64] On November 7, 2020, Kay made her All Elite Wrestling (AEW) debut during the Buy In of Full Gear where she challenged Serena Deeb for the NWA World Women's Championship, but was unsuccessful.

[72] The Hex also defended their championship on Ring of Honor (ROH) during the October 27 edition of Women's Division Wednesday, by successfully defeating The Allüre (Angelina Love and Mandy Leon).

[73] On June 11, 2022, at Alwayz Ready, The Hex lost the World Women's Tag Team Championship to Pretty Empowered (Ella Envy and Kenzie Paige), ending their reign at 287 days.

[74] On January 20, 2023, Kay, teaming with Marti Belle as The Hex, returned to Impact Wrestling accompanied by Father James Mitchell and attacked Rosemary, Jessicka and Taya Valkyrie.