Well the girl in your class was just stupid. Pardon my bluntness but seriously, there have been countless shows on TV that depict EMT's and medics and there is blood in those shows. There are shootings and stabbings reported on the news and the news usually says that the patient was transported by ambulance to the hospital so the girl who passes out at the sight of blood was just a moron for not realizing that they would eventually see blood.
I agree with your point, she should have done at least a ride or a shift in the ER but have you ever tried to get a shift in an ambulance or a observer shift in an ER without being attached to some class or educational experience? The possiblity of her getting in an ER to observe is slim to none unless she knows someone. Or getting a shift on an ambulance service to observe might be a bit easier but again, no attachment to an education system then difficult to get a shift.
But on to your other comment on the chunk of change. Of course the person needs to do research into the job, but to let the naysayers tell her that her disability or limp won't allow her to do the job and her to take that as the truth, she needs to get her head out of the sand and do the research.
We assumed that she had done the research since she said that she "really really really wants to be an EMT". Maybe we were wrong. But in all honesty, it's either do it or not, it's up to the OP, not us to fulfill her dreams.
See that's the issue with these forums, we don't know if this person is truly serious or if they just come here to whine and say "wha wha wha, my friends say that I can't do this or I can't do that" All we can do is give advice and tell them, if they want it bad enough there's a will and a way and it's up to them to do the legwork.
It's not up to us to do the job of finding out all the info for them. That's what frustrates me the most.