Do you think her response is immature?

So my boyfriends younger sister was originally going to move up north in California with her husband right after they got married. Go to school and work. Instead she got pregnant and still lives at home with her mom and no longer has a job and her husband works 2 part time jobs. Her dad asked her why she decided to get pregnant a month after her wedding when she wasn't prepared with life at all and she said, "I've always wanted a baby since I was 14 and I don't want to have a kid when I'm old..besides im starting school online and mom can help me watch the baby." She just turned 21 the same month she got pregnant. Do you think her response is immature or do you agree with her?