(((Dark Dreams)))

- kudos to you for being such a great mom so far. I haven't reached this stage because my girls are almost 9 and 13, but I'm sure I'll feel the same as you. I also have a very close bond with my girls.
Even though your daughter will be leaving, your job as a mother won't stop. Thanks to computers, you can still keep in close contact. Now's your chance to get involved in some hobbies or interests that you wished you could have done when she was younger. Maybe take some part time courses or get involved in an exercise group for women your age. I'm sure there's probably an 'emty nester support group' some where lol.
I think it will be normal to feel some sadness for the changes that are about to take place. Thinking about it before hand will help you prepare for the day she leaves. Since you raised her well and you're very close, she'll always need you. Best of luck.