Hi Loretta:
Eventually she will give up the recipe but she says not until she's too old to make it any more as this is her special gift to her brothers as a remembrance of their parents who are now gone. All three of the kids loved this cake while growing up and my husband can't wait to get it every Christmas. DSIL says "if I give you the recipe you'll make it" whenever DH wants it then it won't be so special for us when she makes it. SIL is in her mid 70's so I expect one of these days we'll get the cake and the recipe. It is a very special gift to my DH and his brother that they share with everyone. We all love it.