"Mother said that my brother looked dignified in his new uniform."
Do you think there's something odd about this sentence? What I know is that we address our family members, such as mother, brother, sister, without adding "my" when we talk to our family. But this sentence goes with mother alone while my brother, which is so inconsistent.
What if I change it to this?
"Mother said that brother looked dignified in his new uniform."
Is it better?