Ruhi referring ria as baccha beta

I saw the Mani returning episode today and could not even understand ruhi calling Riya as beta baccha ..she is just 18 yr for God's sake..ladies at early twenties won't even call kids like that...shravan is shown to be studying and ruhi falling in love..she is a super teenager ... I kind of dislike AAG dese days she is either screaming or falling in love on this show..!!