We’re talking about the mid-70’s - many women were still in the husband-hunting mode. This woman came from a town of probably 6,000 (it was 9,000 in 2010). She moved 100 miles to live in a college town (W. Lafayette IN - Purdue) but did not enroll. She thought she had one, but it turned out that even though they all say “I’m not looking to get married”, some of them really, really aren’t.
Once she realized she had picked the wrong one, I’m guessing her parents cut off funding. She had no particular job skills, and, with the war winding down but not over, the Army was taking about anything. She qualified under those conditions.
The fact that she came back pregnant and alone told me she thought she had one on the line in Germany and figured getting pregnant would “make” him marry her. That trick was still going on in the day.
Yes, the women of that time still had many who considered career women as “too undesirable to get a husband” and that a real woman was a wife and mother and never worked outside the home.
I have a sister who did the same, but in a different college town. She was smart enough and attractive enough - she nailed one. One that she shouldn’t have, but it was 30 years before she figured that out.
I don’t think the possibility of overseas deployment occurred to her - maybe she was too aggressive stateside, so they sent her somewhere where her selection was limited?