I think you have no business telling anyone to look for another career as a premed student yourself.
My advice is to sit this application cycle out, evaluate how you studied for your MCAT, re-study and do not take the test until you rock your practice tests.
If you want it, you can get it.
Its amazing how quickly people look to push this poster away from the field but aren't even looking at possible problems that may be holding the OP back. If it is an issue of studying, then she can fix it and be quite successful. All it takes it proper identification of the problem and I for one do not think the OP is incapable of being a doctor.
I apologize if that came off more harsh than I meant it to. Rereading it, I thought I had focused a bit more on alternatives. Yes, it may seem "too soon" to say things won't improve after 2 tries but the MCAT does have fairly strong reliability as I recall (unsure of the exact value but it's above r=0.7, IIRC) and she would have a long ways to go. If it's staying within about a quarter of an SD over 2 tries, that seems pretty likely to remain. Being as, while theoretically an increase could occur (or she could be one of the 4.58% who get in with a 3.4/23), the likelihood of a positive outcome is quite low, I do not feel it would be prudent to push a person toward wasting valuable resources (her time, her money, etc.) if/when the outcome is extremely unlikely to be positive.
Because of that, I was merely suggesting it might be worthwhile for the OP to consider another option in healthcare. There are many others, some of which were mentioned by TopSecret. Certainly, PA or NP could be used to as a stepping stone to medical school. On the other hand, it's very possible the OP would find she enjoys the work of one of those other medical professions.
On the other hand, there is a chance of success here, albeit a small one, and I trust that if her passion for medicine is great enough to surmount this challenge, there is likely
nothing I or anyone else on this forum could say that would prevent her from going for it. I, for one, would love to see the OP succeed in this, but I think it's crucial that she recognize the odds and what it would take to succeed. Perhaps, though, there are some remediable issues with her preparation for the MCAT the past two times. Perhaps a tutor would be helpful. None of us really knows for sure. Either way, best of luck with this!
(Btw, BigD, congrats on the improvement. The VR is usually the most resistant to change but your practice of the VR probably helped with your comprehension and, consequently, enabled you to be more successful on the PS. Good job solving the rut you were in!)