My friend had the same problem when we were young. She had blonde hair but everyone else did it so she started. I has been one of the things she has regretted the most, as it grew back darker nad became more noticible than it ever was. I started shaving mine when I was 12 as everyone else was. I think it would be best to try and explain to Keely why she might regret it (as my friend did) and then let her make her own decision from there.
Best of luck to you both. I hope it works out for Keely.
Ella
