She's a child with her past memories she isn't an adult. The dragon and the guardian said so ..so even if she wants to act as an adult she can't her life is renewed
"with her past memories" = she remembers majority of everything of her past life.....she died when she was in the end of high school or beginning of college ? ur lowk just proving my point LOL it doest really matter if her life is renewed? she can still act like an adult...as she has shown a few times in the story when she gave advice or blah blah
Ch5, ch17 explained how she feels ..I don't feel like re reading it again but in further chapter she asks the guardians if she is acting her age.. according to them she needs to be herself. In the early chapter she cries, scratches her butt lol that even her mom was worried before meeting the prince. When she met the prince she didn't understand why she just didn't let it go if she was supposed to be the adult with the more stable mentally.. she couldn't because her kid self won't allow her
jealous over a child is embarrassing as fuck age wise ur supposed to have a mentality of a 25 year old but in reality you have one of a 10 year old pls grow up