Maybe they're just old? Anything else happening to the plant?

If you don't look at her closely you'd think she was fine. She has survived caterpillars, yellow jackets, and two type of beetle looking bugs all summer. The older leaves with the rust spots are now shrinking and dropping. And now younger leaves have these spots. It is not yet wide spread so I think she still has a chance, if I can figure out what is going on. The other passis around her are fine.

She's getting worse and I don't know what to do! She has new buds and a fruit. But now the young leaves are getting the spots too. Has anyone had this happen?