Thanks for writing. If you're not seeing any green in the stems at all, the stems have probably died back. It may be able to send up new shoots from the roots, depending on what caused it to die back. (Without being able to see it, I can't say why it died.) You can cut it back and continue to be patient to see if it grows new shoots from the roots --- or replant so you don't have to look at it. It's up to you!
---Justin, Senior Garden Editor, BHG.com