I want to cut my daughters hair.
Why does your daughter having longer hair bother you?
It bothers me because it takes too much time to style her hair.
I get that it could be time consuming to style someone's hair and that could get irritating. I think as long as your daughter is okay with the change there shouldn't be any issues.
I can only imagine her scream of crying when I cut her hair.
It is wrong to cause trauma if you think she will cry about it. You can keep it at a manageable length but cutting it all off and not slowly trimming it back could cause a lot of anguish.