FX's Sons of Anarchy ended its sixth season on quite the sour note, as Jax's (Charlie Hunnam) old lady Tara (Maggie Siff), was brutally murdered by the likes of his mother, Gemma (Katey Sagal).

While speaking to TVLine, Sagal admitted how hard it was for her personally to commit such a horrific act.

"It was really hard ... I was nervous about it the whole time. I think I was just in denial and that [Kurt would] actually change his mind. The biggest struggle for me was to remain truly with Gemma," she said.

Although the actress was quick to acknowledge her remorsefulness for her character's brutal action, she did admit being able to see just why Gemma would commit such an act.

"I think that's maybe why it was so hard [for me] to watch, because it was so clear. But at the moment for Gemma, all [she] knew was that [Tara] had ratted. She had betrayed my son, she had betrayed my club, she was taking my grandchildren away - all the things that were Gemma's center." Sagal added.

Gemma To Go Off Deep End Mentally In Lieu Of Tara's Murder?

While no official air date has yet to be confirmed, SOA is set to return for its seventh and final season at some point in the fall of 2014. Be sure to keep checking back with Enstars for more details.