Tell her! If things are as good as you say they are between you AND she's cool with the cyber and sexting, then communicating your need and desire to keep the fire lit is step one and should go over better than most. On a side note, have you considered and/or tried phone sex and/or Skyping? My ex used to travel quite a bit and it was hard being apart for so many days at a time. We talked about ways to keep things hot and spicy whilst he travelled and tried a bit of everything - cyber, sexting, phone sex and especially camming. For us, getting on Skype and watching each other masturbate for one another was seriously the highlight! Not only did it satisfy the need to be 'together', but the anticipation of him returning home and being together in person, made it that much better.

And admittedly, playing on cam felt a bit naughty which only enhanced the overall experience Good luck!

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My wife and I went through a kind of similar deal just after we got married. I wrote her a tasteful but very descriptive love letter telling her exactly what I wanted to do to her. Two weekends later the kids were at Grandma's and we were in a Victorian B&B with a double bed, a jacuzzi and no TV. She still reads that letter from time to time and we always have incredible sex afterwards.