Are there any readers here?? to

It is sad that a forty-year-old aunt compares herself to a six-year-old child, does not see a difference in mental, psychological and physical development, prefers herself.

She compares herself as a six-year-old to her current six-year-olds, as well as herself as a forty-year-old to possible forty-year-olds in the future.
And you obviously have no difference in mental, psychological and physical development with those six-year-olds.