She played college soccer for the Florida State Seminoles and was awarded the Hermann Trophy two years in a row.

[5] On January 21, 2022, Howell signed a three-year contract with Racing Louisville FC after being selected second by the team in the 2022 NWSL Draft.

[6] Howell made her Racing Louisville debut on March 18 in the NWSL Challenge Cup opener, starting in midfield against the Kansas City Current.

[9] On December 20, 2024, Howell joined NJ/NY Gotham FC as part of a trade that also saw Cassie Miller and Lynn Williams move to Seattle.

[14] Jaelin's father, John, was an NFL safety who was part of the Tampa Bay Buccaneers team that won Super Bowl XXXVII.