body mass index?

Ask ko lang for everyone, as a woman in her mid-20s, normal ba yung 53kg weight para sa height ko na 4”11? Kasi, nasabihan ako nung mga relatives ko na mas mukhang nanay pa raw ako kaysa sa sister ko, she’s in her early 30s, with 5”3 height and weighs 60kg. (I hope my relatives rott in hell, btw.)

I am trying to lose weight rin right now, ano yung ideal body weight na proportioned sa height ko?

Thank you in advance!