What is the meaning of Emily poem So bashful when I spied her mean?

There is no Emily Dickinson poem titled "So bashful when I spied her mean." It is likely that you have either misremembered the title or are referring to a poem by a different poet.

Could you please double check the title or provide any other details about the poem you're looking for? Perhaps you remember a specific line or theme? I'd be happy to help you find it.