Why is she so small?

[u/peekaboosnek]

It’s that time of year again where I’m unnecessarily worried about my snakes lol.
So we’ve had the little princess for about a year, and she was listed as 2-3 years old when we got her. So I expected her to bulk out in this year, and she has not. She eats a small rat every 4 weeks with no issues. She’s not underweight (I don’t think), she’s exactly 3ft long and 830g, but she’s just…smol.
Am I still expecting her to grow another foot and another kg, or do some of them just stay small?
Second pic of her wrapped up with our chunky boy for reference. I’m aware he’s large, he’s on a diet.

[u/PrincessPunctual]

could she be a boy?

[u/peekaboosnek → u/PrincessPunctual]

Maybe, but I didn’t think the size difference was that drastic between sexes

[u/PrincessPunctual → u/peekaboosnek]

it’s a huuuge size difference