You are doing great- I'm sure you've already said everything you can say to her- now just the 180's detatch and 4C's, PMA. It's good your focusing on your kids. I'm not a pro at all- I know most others will say no Valentines Day anything. I effed up in my sitch and did Christmas. Just play it out and see how it goes. Do the unexpected. And do find the time and privacy to let out your grief. It's what's best for you, but she does not need or deserve to see it.