Sources told Radar Online Moore "is putting the past behind her" and is "in total acceptance" of Kutcher's new relationship.
"She ultimately has great love for Ashton and has accepted the fact that he is in love Mila and that they are starting a family," said the insider.
The Ghost star has also "offered to help in any way that she can with the baby and with Mila," according to the source.
Moore and Kutcher had been married for six years when rumors that the Two and a Half Men star had an affair began in 2011. The couple announced their separation in November of that year and finalized their divorce in 2013. Kutcher began dating his former That 70's Show co-star in April of 2012 and reports that the couple was engaged began in February of 2014. Kunis confirmed she was pregnant with Kutcher's child in May.
Shortly after Kutcher's engagement to Kunis was unveiled sources said Moore was planning to go on a retreat to avoid the couple's nuptials. However, insiders say that "things have settled down a lot, and she wants to be there for Ashton's family."
Kutcher and Kunis have not yet gotten married.