Apparently 18 when born (we don’t know the months), but I said “apparently 17 when she got knocked up.”
Condemning all teenagers as unfit parents is silly. And while 18 is technically a teen they are adults.
Age isn’t a factor for parents like this. I’ve seen 40 yr olds who did similar things to their kids. Lack of moral character is the real cause. Probably some drug addiction tossed in there as well.
We would have to know her date of birth. It is possible that she was 17 at conception and had the baby at 18. It is also possible that she turned 18 early in the year, and conceived and had the baby later in the year.