you say you were talking about marriage? what decision did you reach? because the fact she was discussing marriage with you means that she has some plans to spend the rest of her life with you, surely?
how long has it been since she said she wanted time?
what might be happening, is that she is feeling forced by her parents to meet new people, hang out with friends, to please them, but not in an obvious way. if you get me? her parents might be giving her the impression she needs to mix with friends too, but not realising it.
or, she may just like hanging out with her friends, because girls are close to her friends. but not spending much time with you at all doesnt seem to promising, but i really do think that if you love this girl, and you do because you said, then its worth waiting to find out what she decides.
how would you feel knowing that if you had have waited, that you would have had a future together?
but what ever you decide, i hope it works out alright with you.