Correct English Version or Translate into English (mời dịch sang tiếng Anh)

[english-learner]

I can try.

At current, a mother is 36 years old, how old her kid is ? knowing the mother gave birth to her kid at age of 29.

I guess:
"A mother is 36 years old at the moment, how old is her kid?"
"How old her kid is" not a question.