She will never get any taller than 5"2', but weight gain has no limits. How many of your babies has she given life to because of her love for you?? That changes a woman's metablism, among other things, and she can't help it.
Try to rember, if you can, should she not always be the Barbie doll that you married, outwardly-she is still the sweet lovable lady on the inside-with feelings that can be easily hurt, and probably needs your approval and acceptance, more than ever.
You are right, of course; but I did make sure to check out her 84 year old mother, who has given birth to three kids and is still sufficiently attractive to have found a 65 year old man to marry her after her husband died. The odds are in my/her favor. :)