Why must kids turn vegan?

The following excerpt is from a samvaad (dialogue) session with Acharya Prashant.

Questioner (Q): As a vegan parent I am not concerned about my ability to show compassion, but rather about some choices that I have to make for the sake of my daughter’s well-being. She is very choosy towards vegan protein sources, and that is why we have to sometimes buy dairy products for her. Every time I have to do that, I feel bad.