Long story short: Marriage is ending. Married 1.5 years. Lived together 3. I have a stepdaughter who is 7 who I get along with well. We got married too fast and have very different lifestyles, but there was no infidelity.

I need some wisdom on how to handle this. We haven't told her yet.
I was thinking it would probably be best to avoid being sentimental and sad. Is that really the correct way to be? We have a load of Christmas presents all wrapped up. Do I have my wife say they are all from her and not me? I was thinking of trying to be as positive as possible, that now she could live closer to her dad and see more of her family: no tears.
I really have been highly involved since we moved in together 3 yrs ago: driving her to school, soccer games, playing board games, doing homework, .. At the same time, she spends a lot of time with her father and extended family and my wife likes to take off whenever she can on weekends.