Krutika is not as old as she is playing.. Well, Krutika and ANjana Mumtaz (Sabhi ki mommyji) are SOUTENS in TD but in Kehna Hai Kuch Mujhko... (Ashish was there.. as older man married for 19years and the girl who is Meera in Pancham calls him UNCLE).. Krutika played Anjana's daughter.. She played Pallavi Joshi's sister..
Well, once somebody plays certain role, they are kind of typecast..
Look at Jaya (Payal Mehra of Kyunki.....) She is a young girl and look at the other girl who played Puja (Hemant's wife, she is much more younger, I think she is 22-23... ) and she is playing grand-mom.... and in Hindi films, our Shah Rukh Aamir and Slaman who are near 40.. plays a collegeboy roles..
~memsaab