I probably can't really add any insight, since my daughter didn't express any anger or violence. She did learn to enjoy it in a controlled environment, though. It's a tough balance. In today's world it's not so bad for a girl to be ready to defend herself. On the other hand, you don't want to see any bullying behavior. 

siggy47

She is 6. She is not doing it out of anger or malice. She just learned something new and wants to do it all the time. But still need to nip it in the bud. 

grayruby

alter_native

Parent's Corner: Be Judicious

How old is she? If she's really young it's probably less of an issue. Either way, you handled it right.  I think my daughter started mixed martial arts when she was in 2nd grade. She did it until she for probably 8 or 9 years.