Wait how old is everyone again?
Her little brother is 5 years younger, and her sister is 7 years younger, and she was in a coma for 5 years.
This means that the minimum ages are: 0,5,7->5,10,12.
Her last memories show her as the same height as the brother and her sister was shown to be in elementary.
Kindergarten stats at 5 years old so the min is now: 5,7,12->10,12,17
middle school starts at 6th grade (11) so the max is: 10,12,17->15,17,22
10 is quite old for that little sister in the picture so probably closer to the lower side. So that means the MC was doing all those jobs in high school and is now collage age despite her size and physique. It also means that the siblings are in high school with the younger sister potentially not even being a teenager yet. That younger sister hit puberty HARD and has NO ACHNE?!
Edit: And also a Stonks wiz!!!