Reese Witherspoonhas a strong support system as she goes through her divorce withJim Toth.

The Oscar winner, 47,announcedtheir breakup on March 24 thenofficially filed for divorceon March 30 after 12 years of marriage to Toth, 52. A source tells PEOPLE that Witherspoon is leaning on her inner circle of friends as she transitions to life after divorce.

“Reese has many girlfriends that she leans on. She always had a large group of close friends. She has a lot of support,” says the source. “She is positive about her future.”

“Reese is moving on. There is no drama and she’s just focused on her son. She and Jim share custody. They want things to be as smoothly as possible for Tennessee,” the source adds of their10-year-old son.

In their joint statement announcing their divorce, Witherspoon and Toth said they reached the “difficult decision” after “a great deal of care and consideration.”

Reese Witherspoon and Jim Toth in 2017.Pascal Le Segretain/Getty

BEVERLY HILLS, CA - FEBRUARY 26: Actor Reese Witherspoon and Jim Toth attend the 2017 Vanity Fair Oscar Party hosted by Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 26, 2017 in Beverly Hills, California. (Photo by Pascal Le Segretain/Getty Images)

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“We have enjoyed so many wonderful years together and are moving forward with deep love, kindness and mutual respect for everything we have created together,” they said. “Our biggest priority is our son and our entire family as we navigate this next chapter. These matters are never easy and are extremely personal. We truly appreciate everyone’s respect for our family’s privacy at this time.”

Witherspoon is also mom toAva, 23, and Deacon, 19, with ex-husbandRyan Phillippe.

Vivien Killilea/Getty

Reese Witherspoon

A source recently told PEOPLE thatThe Morning Showstar didn’texpect to go through another divorce.

“It’s been very difficult for Reese to get to this point though,” said the source. “They both concluded this was right for them.”

source: people.com