All right guys, so I became friends with this girl in August and we became romantically involved Jan/Feb. Unfortunately, she's been really flakey lately. To the point where it's started to make me feel kind of bad. So I backed off for a bit and she contacted me apologizing and wanting to buy me lunch and get coffee. I of course said ok. The night before we're supposed to meet she contacts me again to make sure it's still on and acts very excited and upbeat. Well the next day (Thursday) a few hours before the meet up, she flakes. Gives a (seemingly) legitimate excuse and "promises" we'll get together on Tuesday. Well it's now Tuesday and I haven't talked to her since then. If she doesn't say anything first I plan to text something along the lines of "leaving soon" or "we still on?". However, I want to know what you guys think I should say if she flakes again? Call her out? Don't respond at all? I keep giving this girl the benefit of the doubt because we were friends before but it's honestly nearing the point of critical mass. I'm not going to be strung along like this and if it were another girl I met at the bar or something I would have moved on by now.

Additional Info: As a new member of the community, I really appreciate all the responses guys. I recently graduated college, moved to a totally area so this girl has really made the transition easier. Unfortunately, that gave me a bad case of oneitus which I've been trying to get over these past couple of weeks. I know saying this over the internet is meaningless, but I do have a good degree of self awareness. I haven't done anything to deserve this kind of treatment and reading your responses reinforces this. I'm feeling optimistic about ditching her if necessary, even though I've enjoyed her company. So thanks for that. I will give her a chance to remedy the situation but if she doesn't...well you know how it goes.