K.P.
I would suggest leaving the laptop and just calling once in a while! Honestly, at that age, she's not going to understand "Skype" and why she can see mommy on the t.v., but can't access you.
I travel quite a bit for work and my 3 yr old recently asked if he could call me on the computer next time, but this is the first time he's asked. Don't call too much b/c the grandparents are probably going to be spoilling her rotten and remember... they did a great job with you so they are going to be great with her!
Enjoy your much-needed break and know that your little one will miss you and will be a little clingy the first day or so after you come back. Don't forget to say good-bye to her when you leave, even if it makes you both weepy and DO NOT feel guilty about spending time alone with your husband! A happy mommy & daddy with a good relationship will only lead to a stronger family!