Kay

I'm guessing the mom just thought she had to say something because
her son expected her too. But I'm also guessing she doesn't
worry to much about it. Its more for show for her to say something honestly.

She would have wanted to help you work it out if she really cared about her son and his friend. And his bike and what he learns to act like as an adult.

That honestly is how parents who care like the father, do things.
So remember that when she comes to blow her mouth off.

Donna