I read in Shulchan Aruch that a woman can make kiddush for a man, but it seems to me that there's a kol isha issue with doing so publicly, i.e. at a table at a shul or large gathering. Are there any sources that perhaps rule otherwise?
Yalkut Yosef siman 271 doesn't mention Kol Isha, just that it would be immodest if it's not her immediate family. He says furthermore that it is immodest if she is reciting it for a man. How this translates into practical situations is very context-dependant and should be decided with the aid of one's LOR.