Help! Toner lightened my brown hair?

Ok so a few months ago I died my hair black which eventually faded to my natural dark brown color. Last night my friend (who is in cosmotology school) did blonde highlightes all over....which looked awesome! Until she added silver lady toner all over my head....my roots (virgin,regrowth,unbleached hair) turned to a gingery, copper color!!! While the rest of my hair id dark brown with blonde, What can I do to make my roots back to dark brown without messing up my highlites???