(Aeyana and Gircya and Solara and Biya HDT and non-HDT)

The blonde Aeyana can follow you if you use Familiar Faces

The brunette Biya can follow you if you use Familiar Faces

The black-haired Gircya can follow you if you use Familiar Faces

The redhead Solara can follow you if you use Familiar Faces

This may help if things don't work, but... I don't expect that to be the case