we play 2 over one ( game forcing) and 1NT forcing; my partner opened with 1D; I am sitting with 20 hcp, 1D, 4C, 4H, 4S and open with 2C showing a MINIMUM opening hand ( and no fit with diamonds). My partner responds 2NT. I assume that she DID NOT have anoter 4 card suit to bid. We wound up at 4H and missed the slam ( I made a grand slam). She defended her bid ( she had 14 tcp) stating that I should have jumped shift rather than do the 2 over 1. I argued that my bid was fine and further, by her bidding 2NT she denied having 4 hearts which, in turn, messed up my bid. Who is correct???...Let me clarify a bit......My hand had all 4 aces plus 4 other points. The bidding went 1D, 2C, 2NT, 3H, 4H. I was afraid of a notrump contract with my singleton Ace , I couldn't depend on the reliability of her diamonds because of the better minor bid and my 3♥ bid was a desperate attempt to find some kind of suit contract.