Hi Karen,
What a special revolver your late grandmother's is to you . . . and also a very fun little revolver to shoot!!!
If it is in good shape, as it probably is, you should be about to really enjoy shooting it with .32 S&W long ammunition.
Here's mine, from the same time period. Mine has the 1" longer barrel. These wonderful revolvers came either blued or in bright nickel plate. Obviously, mine is nickel. It is a very accurate, and soft-shooting revolver!
You're should look like it, although in the shorter barrel length.
Hope this helps.
Tom