Liberty Ross Ringless Following Rupert Sanders Affair, Awaiting Kristen Stewart's Letter?

Liberty Ross has reportedly not made any decisions regarding her 15-year marriage to Rupert Sanders as new reports suggest that the mother of two is still coming to terms with his affair with Kristen Stewart.

The 34-year-old former model recently attended the movie premiere after-party for "Lawless" to support her longtime friend, screenwriter Nick Cave. She appeared to be in good spirits and arrived wearing an emerald green shirt dress but was without her wedding ring.

Despite recent reports that Ross was in the process of ending her marriage to Sanders, 41, over his affair with Stewart, it is now believed that she is yet to make any final decisions.

"No decisions have been made," a source told Us Magazine. "Nothing has been filed. It's still too early to tell what will happen. She is talking to and seeing Rupert now for the kids, but as far as the marriage she's still processing everything that happened."

The reports follow speculation that Stewart, 22, had written a private letter for Ross to apologize for the indiscretion and to seek her forgiveness.

Sanders, who directed Stewart's latest film "Snow White and the Huntsman," was photographed intimately hugging and kissing the 22-year-old actress, which led to speculation that the pair was having an affair.

Stewart, who has been dating actor Rob Pattinson for three years, almost immediately confessed to cheating with Sanders after the intimate photos went viral.

"I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry," Stewart said in a public statement.

Although most critics agree that Stewart did the right thing in coming clean about her affair with Sanders, she was still criticized for failing to mention Ross in her public apology.

"Kristen didn't feel it was appropriate to issue a public apology to Liberty once the story of her affair with Rupert broke. Instead, she's going to do the decent thing and write Liberty a private letter expressing her deepest regret for her actions," a source close to the situation previously told Radar

"She was thinking of including Liberty, Rupert and the kids in her public apology – but Kristen was so desperate to save her relationship with Rob she decided to concentrate on that first. Kristen feels she made a terribly naive mistake and will do anything to make amends. The fact that Liberty and Rupert have two kids has now dawned on her and she feels awful for what she did," the source added.