The Twilight actress confessed to cheating on Robert Pattinson after photos showing the pair together were published in US magazines.
Sanders issued a statement apologising to his wife Liberty Ross, but the couple allegedly have yet to reunite.
"She's been focused just on her kids through this," a source told People. "It's what she cares about the most.
"Now she's really feeling strong and looks forward to resuming her life," the insider continued.
However, the source was quick to insist that this does not mean she will be getting back together with her estranged husband anytime soon.
Ross recently confessed that she sometimes felt like she was raising their two children alone.