Boarding school parents make a personal sacrifice for the advantage and enrichment of their student. I wasted time feeling all dramatic about mine being away instead of getting a life. I found we had great communication even though she was in school. Visits on breaks and bringing friends for a visit were great. The student will be far and beyond more prepared for college and will have a really seamless transition and a lot of insight in choosing colleges.
I agree with most of the parents in your other thread in that now that you have let her apply, she has got the financial award that it is too late. You should realized that of course you will have some adjustment on your part and the feelings may not entirely pass but you will have many things to offset that when you find how she is able to do all the academics and activities that she wants. You have all summer to enjoy her and there will be thanksgiving and winter, spring and next summer, and you will really both enjoy those breaks and probably have a more meaningful relationship.
in case you lost your other thread
http://talk.collegeconfidential.com/prep-school-parents/1782494-my-14-year-old-daughter-is-going-away-to-boarding-school-in-the-fall-and-i-am-having-a-hard-time.html#latest