That sweet little boy will soon be calling you mommy, sweetie. I know it is heartbreaking, but he will. I use to work at a daycare, and he will remember his angel mommy , but he will also have you. At two they will remember as long as you let them, you need to get his mind off of her by games, movies, any activity, keep his mind going. After he passes the missing mommy stage, then you can tell him the truth, he will be fine, and so will you.
txmom