You're not going to get much for her in that shape. If you can't use it, give it to a kid, it might spark an interest in the hobby, you never know.
For a corroded common date like that, you'd get maybe a buck. The story behind it is worth a lot more, IMO.
I was pulled into to hobby by an IHC, similar to this. A gift from my father, and here I am, fruitlessly collecting now for about 20 years. Within my collection, the value comes orimarily from the stories and history. So to me, this is priceless. That being said, if you pitched me a story, I’d pay $3 for it. I’ve been looking into metal detecting with no clue where to start... ‘‘tis the purest form of treasure hunting, if you’d ask me.
More sentimental value than dollar value. If it was sent in to be graded it would receive a details grade, "environmental damage" or corrosion. The soil in some areas are harsher on coins than other areas.