Despite the tension in her parents' marriage, Lexi still maintained a close relationship with her father, Alvin.
She first appears in Now Is Always Temporary, where she tells her father that her mother is having company and has brought Alvin a list from her mother. Alvin told her that she didn't have to play peacekeeper and after she asks why he does not move, he says he stays in the garage to be near her and her mother. She was touched by this declaration. Lexi is then surprised when her father voices that he wants to attend an upcoming father/daughter dance with her, smiling when he says he has his suit ready. However, when Lexi was blamed for having marijuana in her locker (stored there by a boyfriend), Alvin came down and was quick to help his daughter out. Even though she pleaded to him, he went after her boyfriend when she was suspended from school. Lexi was angry that Alvin did so, as her peers ostracized her. Despite this, she forgave him and the two had a make-shift father/daughter dance in the driveway.
During A Material Witness, Lexi is the sole witness to a shooting of a gang banger. Alvin was worried for Lexi and did everything to keep her from testifying (and becoming a surefire target to the gang). Alvin and Hank usurp the investigation from the Gang Unit and hunt for the likely suspect, a gangbanger named Calaca hooked up with the Latin Priests. Despite their efforts, their work only guarantees Lexi will have to testify if the case goes to trial. She reassures her worried father that, despite the danger, it's the right thing to do.
In The Three Gs, Lexi has lunch with her father and his coworker Lindsay. They discuss the future of Lexi after her graduation with Alvin trying to persuade her to become a cop like him but she refuses. Lexi still has to go bidding her father goodbye. At the end, she eats her dinner with her parents and things are awkward. She almost excuses herself to go do her homework but is surprised when her father invited her boyfriend Jason over to the house. Lexi smiles when Alvin describes her boyfriend in a accepting manner and the family have a pleasant dinner.
In Actual Physical Violence, at dinner with her parents, Lexi is shocked to learn that she has a half-sister named Michelle born from her father's affair while on assignment. Lexi cries at this news before she watches her mother storm out. She tried to stop her until Alvin tells her that he can't lose her, in spite of his mistake.
In Favor, Affection, Malice or Ill-Will, Lexi is called by her father to meet at the precinct. She tells him that she’s not moving home before being surprised by him hugging her and being told that he only wanted to see her after he had a bad experience with a case.
After her death her father fell into a depression and nearly attacked the arsonist responsible until Hank talked him out of it.
|Stepping Stone||Wrong Side of the Bars||Chin Check||Now Is Always Temporary||Thirty Balloons|
|Conventions||The Price We Pay||Different Mistakes||A Material Witness||At Least It's Justice|
|Turn the Light Off||8:30 PM||My Way||The Docks||A Beautiful Friendship|
|Call It Macaroni||Get My Cigarettes||The Weigh Station||Chicken, Dynamite, Chainsaw||An Honest Woman|
|Prison Ball||They'll Have to Go Through Me||Assignment of the Year||Called in Dead||Shouldn't Have Been Alone|
|We Don't Work Together Anymore||Disco Bob||A Little Devil Complex||Erin's Mom||What Do You Do|
|What Puts You On That Ledge||Say Her Real Name||Get Back to Even||The Three Gs||The Number of Rats|
|There's My Girl||Push The Pain Away||Born Into Bad News|
|Life is Fluid||Natural Born Storyteller||Actual Physical Violence||Debts of the Past||Climbing Into Bed|
|You Never Know Who's Who||A Dead Kid, a Notebook and a Lot of Maybes||Forget My Name||Never Forget I Love You||Now I'm God|
|Knocked The Family Right Out||Looking Out For Stateville||Hit Me||The Song of Gregory Williams Yates||A Night Owl|
|The Cases that Need to be Solved||Forty-Caliber Bread Crumb||Kasual with a K||If We Were Normal||In A Duffel Bag|
|Justice||She's Got Us||Start Digging|
|The Silos||Made a Wrong Turn||All Cylinders Firing||Big Friends, Big Enemies||A War Zone|
|Some Friend||300,000 Likes||A Shot Heard Around the World||Don't Bury This Case||Don't Read the News|
|You Wish||Sanctuary||I Remember Her Now||Seven Indictments||Favor, Affection, Malice or Ill-Will|
|Emotional Proximity||Remember the Devil||Little Bit of Light||Last Minute Resistance||Grasping for Salvation|
|Fagin||Army of One||Fork in the Road|