Unless you know the girl very well, you can’t be sure about her life at all. My mother had me as a 19 year old waitress who was dating a charming ne’er-do-well from the local reform school. Disaster, right? Except she had a great family support system, was a wonderful mom who just adored parenting, loved being young enough to keep up with me, and generally just did a great job of it. She struggled at times, sure, but having a kid also gave her new focus and she slowly built up a nice career for herself. When I moved out, she was only 37 and still young enough to make up for all the travel and partying and whatever that she missed as a youngster. She met the man of her dreams and is looking forward to an early retirement in a few years. Not a “ruined” life at all, and not a “beat all odds” thing either. She’s been having a pretty normal life, except she had a kid pretty young. It’s not hollywood glamour and she didn’t win the Nobel prize. But she’s happy, has a great daughter, and has made good for herself.
Heck, sometimes I wish I had a kid that young. I would have had a great support system, and would be almost done with my parenting duties. Now I’m sitting here at 32, realizing that even if I do have a kid in the next year, i’m going to be parenting until I’m fifty, and I’ll probably be doing a lot of it without a ton of family support.
Children do not need much. They need calories that cost literally a few bucks a day if you plan it. They need a roof over their head (which presumably you have of your own and can share.) They need some clothes, which are not exactly the rarest jewels. They need health care, which I admit is a pain in the ass in the US. We’d like them to have a nice room and a good school and nice things, but really those are extras. 99.9999999% of humanity lived happy, meaningful lives without separate bedrooms for each sibling and SUVs because we have kids and special chicken nuggets shaped like dinosaurs. Our own parents and grandparents didn’t have that stuff. My mom complains now about the three bedroom house she shares with her boyfriend and his son, but she grew up in a house half that size and three siblings. Indeed, it’s only in the last few decades that “teen parent” has been anything unusual. Most humans in history have been born to mothers that first gave birth as teens.
Anyway, the point her is that what makes a good parent is love and a minimum of security (no active addictions, relatively few low-food periods, etc.) A child raised with this stands a good chance of living a happy, fulfilling, contributing life, regardless of their circumstances. A child raised without that will have troubles, even if their parents seem like the most upright and well-off people in the world. Plenty of middle class, stable families harbor their own secrets.