I browsed around this website (here and here) as well as around the internet but could not come up with a satisfactory answer, or at least well related to my case (though I might have missed that point).
Simply, the other day a quite old lady (over 70 I think) asked me 「楽しいでした？」 at the end of a shodou class.
My question is, is this just a polite version of 「楽しかった？」that somehow confuses me? In such case would that be more polite than 「楽しかったですか」?
Or is it just a way older people might talk sometimes? At the moment I heard it my first thought was whether she thought I could not speak Japanese and put it in a wrong but easy to understand form (as if she thought I might not know how to conjugate an いーadjective properly).
Maybe it's just a silly question but right there on the spot it confused me a bit and I would like some clarifications. Thanks.