Nothing wrong with a good howl...it's healthy to let your emotions out instead of bottling them up. Probably you feel protective of her and see her very much as still a little girl. Also it means a change is coming and quite a major life change at that. Change is never easy but you'll come out of it allright when all is said and done.

Just try to support her and help her to make the right life decision she is now faced with. Her happiness is what is important here.

Good luck!
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Love is the answer...