I have to admit, my initial reaction to that story was "Oh, my. What a total waste of resources!" Which to an extent, it is. BUT, after thinking about it for awhile, I can see how it might be easy for her to get "trapped" in this educational process for several years even after realizing that medicine was not for her.
Think about it. Many (if not most) MD/PhD programs will waive your tuition for at least part of medical school (through the MSTP funding program). So she starts med school, maybe to some extent to make her parents happy, but maybe she also THINKS that this is what she wants, too. She goes through the first two years and is thinking "Ugh, what have I gotten myself into..", but everyone tells her "Just wait, everything changes once you get to the clinical years." Which is true, but it doesn't always change in a good way for everyone. Plus, she is kind of stuck, because she has (most likely) already signed a contract prior to starting the MD/PhD program stating that she will continue the program, otherwise she will be responsible for repayment of tuition for the first two years. She she says, "What the heck. Maybe it'll get better. Maybe the reasearch years are where it's at." And then she starts the reasearch with the best of intentions, and realizes somewhere along the way that she hates it. But she still sticks with it because, hey, everyone says that the clinical years are sooo much better. Maybe it'll get better. Plus, she's already invested all this time and effort. She may as well see it through. But then BAM! Third year starts and guess what? It's not better, it's miserable! And there is nothing she can do, because if she quits now, she will have to pay back THREE years of med school, whereas if she keeps going, her tuition will remain waived. So she finishes grudgingly, and has no intention of a career in medicine, not even pathology or radiology because those are pretty specific, highly visual and intellectual areas which, quite frankly, do not appeal to everyone. (Although as a future pathologist, it's hard for me to imagine someone not liking this field!)
So yeah, it sucks and it's a waste. But you know, I think it's better to waste an education than to waste an entire lifetime doing something you despise. JMHO.