The sentence seems draconian but US courts generally hand out sentences which seem harsh compared to those of European courts.
It's difficult to see how she did not know she was pregnant; she had a positive pregnancy test and seems to have taken to wearing concealing clothes.
Abortion is difficult, but not impossible in Ohio , although after 20 weeks would be unlikely to be permitted other than in exceptional cases.
She was on a campus and young women on a university campus probably have better access to advice on pregnancy, contraception etc than those not on a campus.
She got through the whole pregnancy and having got that far it's difficult to see why she did not take advantage of the fact the baby could be passed to a hospital on a no questions asked basis.
It's not really correct is it that there was nowhere to turn to? The campus had a welfare centre which she used. Universities provide pastoral care for students.
I accept she probably has mental health issues but to say she didn't know she was pregnant, had no one to turn to, didn't want to be pregnant and had no way out is a bit of an exageration.