Unnathi Aiyappa, the 13-year-old daughter of former Indian heptathlete Pramila Aiyappa and quartermiler B.P. Aiyappa, won the Long-Jump Gold Medal in the U-14 category in the Junior National Championships held at Ranchi last week. Unnathi was a constant presence at the Kanteerava from a very young age, accompanying Pramila during contests and later on, as…