Rahul Gandhi's Nurse was 13 year old when Rahul got birth?

Spam Check - Did 13 year old Rajamma did delivery of Sonia Gandhi during Rahul Gandhi's Birth?

On the eve of 9 th June, Rahul Gandhi, chief of Indian National Congress met the nurse who is said to be part of the doctor's team who were present during his birth. 

Then came a claim that, Rajamma was 13 year old when Rahul was born, as her age is 62 as of now.

Well the information is fake and calculation has gone wrong. As per the first post article Rajamma's age is 72. She had taken voluntary service off in the year 1987.

https://www.firstpost.com/india/rahul-gandhi-meets-kerala-nurse-who-witnessed-his-birth-at-delhi-hospital-woman-gifts-congress-chief-jackfruit-chips-sweets-6781411.html

Hence 72-49 = 23 works out for Nurse job.

However team book review has question with all media that , don't you have news paper article of day after Rahul Gandhi's Birth, which does solve all confusions?