And whose girls is she referencing? If it is the kidnapped girls then I was surprised to learn she is Nigerian.
It would be like someone saying to me when my Mom passed away, "We will miss OUR Mom, won't we". Yes, if that was my siblings, but not even my cousins would have said that to me; nor did I when their mother passed away. She was Aunt to me, and one I loved dearly, but their mother. These children can be shown concern without ownership.
Actions speak louder than hashtags.