How Should I respond to her advances

[Arsene]

Hello everyone,
First i'd like to thanks all of you for the info I got from this site over the last two years since my wife had her EA and I became aware of her MLC.
I'm a new member and this is my first post but I've read many of your stories and advice and my heart goes to all of you for your courage and willingness to keep on trying when all seems so dark.
I, myself, have decided to stand by the woman I love and not to take her Monster days personally. Over the last few years, we had many downs but the last year was mostly ups and we'd even started planning a new life together, all of it her idea (no pushing from me). In the last year, she'd also told me, more and more, that she loved me and thanked me many times for "sticking with her".
Two months ago, i left the country where we live with our daughter8 to go for my daughter's first visit with my parents/family and my Wife had to stay behind for financial reasons (she had met my family 9 years before on our honey moon). Before leaving, I told her i was a bit worried considering what we'd been through over the previous few years, and she hugged me and told me not to worry, that everything was fine. We parted in a lover's departure with long passionate kisses.
Two weeks into my holiday back home, i got an email from my wife telling me that she had put a lot of thought into it and that she couldn't live with me anymore. She wanted to separate.
Having already had to deal with this over the last few years, and with the benefit of a lot of info gathered over the last few years, I kept my cool and didn't go on the begging wagon. We talked about it (chatting) maturely and it turns out she says that she'd wanted to do this for a long time but each time she'd tried in the past, I had convinced her otherwise. That's why she had to do it online while i was out of the country for 2 months. She also said that she didn't really want a divorce but would give it to me if I wanted it. We've maintained contact over the last month because of our daughter and everything is now very civil, with even a touch of humour in our chats. I've done a lot of introspection and started taking care of myself, and trying to move on (as is mostly recommended in everything I read here and elsewhere). I think that overall, I've got a good grasp of what i need to do. Be Kind (to her and to myself), Be patient, detachment and release (let her go).
She will be moving out of our house and getting a room so I suggested that for the sake of the kid, she get a room nearby so she can often come and share a meal with the girl and even come around to tell her bed time stories. This way we can try to maintain a semblance of family life for the girl. To this, my wife agreed readily. I must say that in my view, we had always had a very respectful relationship and strong family life.
Now, here is the problem. I'm returning in two weeks and my wife offered to pick us up at the airport in the city where her mom lives (which is where we left from but not where we live). We'll then be travelling together by train to the city where we live after spending the night at her mom's.
We'd always had a very satisfying and active sex life and I'm worried that she might put the moves on me when we meet again. Afterall, it has been a few months for both of us (at least I hope) and our chats have always been very friendly with no arguments. I think i know what I need to do if she comes on to me but I'd like to hear your comments, experiences and advice on this.

Thanks a whole lot.