Do you think it's okay for a family member to tell a younger family whether they should keep a baby or not?

Eliza
I was watching a show and one of the older sisters (23) wanted her younger sister (15) to put her baby up for adoption because she felt that she (older sister) would be forced to take care of it as the younger sister was still too young to be a mom. I felt this was super wrong because I believe in the rights of full body autonomy and that it was ultimately up to the younger sister to decide what she does. What do you think? 
Note: THIS IS NOT ABOUT ABORTION THIS IS ABOUT THE RIGHT OF A PREGNANT WOMAN TO CHOOSE WHAT HAPPENS TO HER BABY. Any arguing about abortions being wrong or right and I'll delete the post. 

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