When was the last time you saw someone reading while walking? The last one I saw, other than myself, was Belle in the animated version of “Beauty and the Beast”. And I only do that occasionally, when I really couldn’t wait to find out what the author has to say.
Someone who likes to read so much, beyond primary school, should do fine in her studies - although she should still watch her steps. I noticed that she did put away her book before she crossed the street. She was not oblivious - her parents can rest assured.