To be completely honest, I am entirely amazed and amused with
your concern. How old are the two of you by the way?
Discounting the possibility that you were actually abusive and
downright rude (I am assuming nothing like that took place since
you did not go into much detail about what was actually
said) in conveying your displeasure that she reneged on your
date, I'd suggest you act like a man for once and move
on.
Unless you're prepared for more drama (think more
cancellations/postponements of dates/family time for fear of being
isolated by colleagues/friends/acquaintances/any-reasonable-soul
who would invariably become strangers 30 years from now
anyway) in time to come, it's possibly the best option to
pursue.
Why bother with
people who can't even accord you the most basic respect and honour
their word?
On the basis of the reason (it's entirely another matter if she
reneged on the date due to some real
exigencies/emergencies) she gave, she's basically either
desperately insecure or has horrendous time management - or
possibly both! Are you serious about dating someone like that and
potentially spending the rest of your life with her (let's assume
the affection is mutual here)?
Let's be honest: if you found such behaviour acceptable by your
standards and compatible with your own values, you probably
wouldn't have been irked by her behaviour to begin with. The fact
that you're disturbed (and understandably so) already suggests an
issue of incompatibility before you actually become an item.
If you're trying to go out of the way to accommodate her
- at the expense of betraying your own principles as your
behaviour would suggest - just because she's an object of your
desire, you're no different from a pot smoker trying to feed a
temporary addiction without actually having considered the
long-term implications.
Put it another way. If the exact same scenario had been played
out between you and another friend whom you had completely no
romantic interest with, would you still be trying as hard to "mend
this broken friendship"? If you could answer this, you probably
know what to do...