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The holidays may bring a final showdown in the marriage of Tiger Woods and Elin Nordegren, a source close to the golfer's wife tells PEOPLE, saying, "She plans to leave Tiger."

Another source says, "She's made up her mind. There's nothing to think about: he's never going to change," PEOPLE reports in its upcoming issue, on newsstands Friday.

Photos circulated this week, showing Nordegren, 29, pumping gas into her vehicle near the couple's home in Windermere, Fla., last Saturday, also captured the Swedish-born former nanny and mother of two (Sam, 2, and Charlie, 10 months), not wearing her wedding ring.

While the missing band "meant nothing," insists a source, a high-profile Florida divorce attorney tells PEOPLE that Nordegren has met with lawyers to renegotiate the Woods' prenuptial agreement.

On Thursday, workers began moving large items including what appeared to be works of art out of the couple's home in Windermere, Fla., and Nordegren was seen giving them instructions, according to the New York Post.