I feel for you! This time last year I could have written the exact same thing - all of it. I'm still here (still finding this forum enormously helpful - thank you all). I genuinely did not think I would cope without DD at home and dreaded dropping her at uni last year. But I'm happy to say (for the most part) I'm coping very well
DD is wonderfully happy at Uni. She hasn't come home apart from holidays. She has stayed in touch with old school friends, made new friends and grown and matured in so, so many ways. In turn our relationship has matured too. It is no less than it was, it has just moved on to another equally enjoyable phase. She too is in a lovely city and I definitely look forward to my train trips once a term.
With facebook, text and skype it is really easy to keep in touch on a casual basis, without all the expectations and angst of the weekly/monthly phonecall home that I remember when I was at uni.
I'm so proud of her and I'm just a little bit proud of me too.
It's an amazing time (albeit flying by); hopefully you will find much to enjoy about it too.
Good luck to both of you. Enjoy the summer.