I agree with the Xmas gifts and day. Put Mommy and Daddy on the tag and be cheerful and nice. It will only hurt your girls if your not. Not saying to sit next to her and hold her hand, but be friendly and nice as you would treat a houseguest. Remember your girls are watching.
Me: 46 FWS: 36 Married and Divorced 4/07, Pregnant 7/07,False R 7/07 Baby Girl born 3/08 Kicked him out because OW: 7/08 5/10 He realized what he had and lost. Moved home! REMARRIED 3/14/11!!