Liberty Ross uncertain about divorce after husband's affair with Kristen Stewart

Heartbroken Liberty Ross is undecided about whether to file for divorce from Rupert Sanders after his affair with Kristen Stewart.

Model and actress Ross was left stunned when the news of the director’s infidelity broke, and is said to be ‘still processing’ the affair.

The 33-year-old has been in contact with Sanders to discuss issues relating to their children, Skyla, 7, and five-year-old Tennyson.

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 brunette played Stewart’s mother in Snow White and the Huntsman, which was directed by Sanders.

Photographs of Sanders and Stewart emerged in July that proved the couple were having an affair.

Stewart has since broken up with long-term boyfriend and Twilight co-star Robert Pattinson.

Ross is keeping a low profile and wants to deal with the situation in ‘private’.

The source added: "No decisions have been made. It's been very hard on her dealing with this and all the media attention.

"She is very strong and working through it and keeping private about it."

Ross has been spotted out and about in Los Angeles without her wedding ring recently, causing 41-year-old film director to worry he has made the "worst mistake of his life".

An insider said: "Rupert is willing to do absolutely anything and everything he can to save his marriage, he realises this is the worst mistake of his life, and he cannot believe he was so stupid."