I'm writing a story in first person, but may need to change the POV. Chapter one is set in the present and then the MC recalls a part of her childhood for the remainder of the story. I'd like her to be 10 or 11 yrs old; however, I'm worried it's not credible for her to recall such vivid memories. I've switched it to third person and it reads ok. It feels more natural to write this in first person. Should I be concerned about her age? Should I go with third person to be safe? Thanks!