I firmly believe any woman who accepts a proposal for marriage and does not get a date from the man in two weeks time should give the ring back. I knew a woman who got a ring with no date and this went on for two years before enough of us asked "When's the wedding?". She broke up with him and is now married to someone else who was serious.
I agree, personally she should have kicked him to the curb a long long time ago as far as I'm concerned, but you can't live other folks lives for them...
If you are willing to give a ring but not a date, and I am a guy saying this ladies... all you are doing is a stalling maneuver.
Women, we're guys, we aren't generally that emotionally deep... we are pretty damned base. We either want something or we don't... if we want it, we'll commit to it... if we don't, we won't... If you get a ring and no date, all you got was another year of doing his laundry before its over.
The date never comes from the man. A man could plan a wedding by next weekend. In all fairness, it's women who usually have opinions about the date. What I'm gathering you mean is, she proposed dates and he wouldn't commit to them?