The 'Hawa Me Udta Jaye' girl.

Who is this girl? Some say it's Bimla Kumari, but she is not credited and Barsaat does not appear on her ImDb page either http://www.imdb.com/name/nm0474923/.
Does anyone have any concrete information on who this is?

Please don't "I think this is..." or "pretty sure this was....".

Reply only if you have evidence, for example if you got the 78RPM vinyl and she is credited there (because the character name appeared on the vinyls in those times, not the singer names).