This is f/f telepathy, a genre I adore. ♥ If you do too, also check out The Gardener's Hand by Felicia Davin, which I talked about here.
This trilogy has a variety of alien species. Some are close to humans, others couldn't be any more different. The Risalians are agender and use xe/hir pronouns. Several species have a third gender called gatoi, with zie/zir pronouns.