Legal Question in Real Estate Law in New York

You need a will.

Either give it to her in your Will or do a new Deed adding her to current ownership. Better to do it by Will which can always be changed during your BB lifetime if you are competent This protects you if there is a divorce or she runs up liabilities she cannot pay.

I don't quite understand how the lawyer didn't ask about your wife not being on the deed when you bought the house. That doesn't make sense to me. And since you specifically mention 'putting everything solely in my name', it seems to me you were and are aware there were alternatives when you bought the house. Both you AND your wife didn't understand title could have been in both names originally? I find that hard to believe. Or, there are facts missing here, which I think is more likely.

Good luck.