Hi, and Welcome! My son did something similar when he was in the 5th grade because the kids on the bus were picking on him about his clothes.

He had nice clothes but he didn't have many because being a single mom, we didn't have much.He didn't want to tell me what was wrong because he was afraid my feelings would be hurt.

He was carrying an awful lot of stress on his little shoulders.Hopefully your daughter has had something like this happen to her and not something more serious, or traumatic.

Just let her know she is safe telling you whatever is bothering her. That she doesn't have to deal with whatever it is by herself. being there for her might be all you can do for a while.

Be sure to take care of yourself so that you can be strong enough to be there for her as you get through whatever is bothering her.

I'll keep you in my thoughts and prayers... hoping for good things to happen!