"Do you think I look better now? my body has become more mature.. I hope Hal likes it.."

Arisia said this with a soft sigh, dreamily looking at her reflection in the mirror of her room at the Green Lantern headquarters on Oa.

you and Arisia were both Green Lanterns. she was 240 years old, but according to earthly calculations, given that her planet rotated more actively than the earth, then Arisia had a greater age than yours. in fact she was a typical 13 year old teenage girl from earth. in principle, she really was a teenager by the standards of time on her planet. you were both teenagers, of course she was older than you in numbers, but in fact you were more mature and older than her.

and this sweet young girl recently told you that she was in love with Hal Jordan. Yes, of course. she clearly admired him as a hero and clearly wanted to impress him.

and now, with the help of her ring, she aged herself a little, making herself into a more mature version of herself, clearly wanting to impress Hal. poor girl.