<P> During the day she's visited by Jax's ex-wife Wendy, who makes it clear that she wants to know Abel better, as she gave up custody but not the right to know him . This unnerves Tara who feels she is Abel's true mother and becomes fearful that Wendy will take him away from her . Wendy leaves her number and Tara smashes the vase of flowers, screaming in anger . She's later put under psych watch and restrained to her bed . Jax begins to feel at a loss as how to take care of and comfort her . </P> <P> Later Gemma comes to see her and confesses that it was Clay who wanted her dead because of the letters, which she gives to Gemma . She reveals later to Gemma that she was fully aware of her plan to have Clay killed by Jax and hide the letters that involve her and Unser, to prompt Jax to stay as President . Tara gives Jax a blood thinner to inject into Clay, who is recuperating at St. Thomas . She then tells Jax, in front of Gemma, that he will kill Clay and come get her and the boys, so they can leave Charming forever . This plan fails as Jax is forced to stay due to the influence of Romeo Parada and Luis Torres who are undercover CIA agents . They need SAMCRO to provide weapons and transport drugs or they will crush the club . Understanding that Jax has to become President, Tara decides to remain with him . In the season finale, with Gemma watching Tara stands behind Jax at the head of the table, one arm draped around him, mirroring a photo of Gemma and John Teller . </P> <P> The season begins with Tara's hand in a cast unable to perform surgeries . Despite losing ability to operate, she supports Jax as President of SAMCRO . The couple lacks certainty of "where it all goes," but Jax is clear that "no matter what happens, I want you to be my wife ." Tara mocks the romanticism of a spontaneous wedding at Diosa to which Jax jokes, "I killed a Fed for you...nothing says endless love like capital murder ." A judge marries them in a quick ceremony with wedding rings that belonged to Gemma and JT . Tension rises between Tara and Gemma over controlling the family . Tara places Abel and Thomas in hospital daycare with Jax's support . Tara gains power by shutting out Gemma, who is not on visitor list at first . Gemma tries to hurt Tara by using Wendy to threaten a custody suit . Tara stands firm by warning Gemma not to hurt her or her family or Jax "might kill you ." Tara strategically plans squashing RICO case with Lowen, Bobby and Jax . She volunteers at Stockton State Prison and asks Otto to recant his RICO statement . </P> <P> Tara extends an olive branch to Gemma by placing her on daycare visitor's list and allowing her to watch the boys . Gemma is stoned when she wrecks her car with Abel and Thomas in the backseat . Tara punches Gemma when she confesses to being high while driving with the boys . Tara's fears intensify over the increasing threats to her family; she starts to defend and protect them in Gemma - like ways . Tara cuts her out of the family, but agrees to let Gemma back in if she helps Jax with getting intel from Clay on plot to undermine his leadership . Tara receives good prognosis for her hand and gets recruited for a surgical job in Oregon . Meanwhile, Otto agrees to Tara's plea on RICO if she will bring him Luann's crucifix . </P>

In sons of anarchy why did gemma kill tara