2) The word/name is supposed to have some sacred or culturally significant meaning, yet you can find no mention of it anywhere but baby name lists.
3) The word/name is supposed to have some long meaning, like "power of the moon" or "she dances lightly through the forest."
For what it's worth, the Lakota Sioux name of Kevin Costner's movie character "Dances With Wolves" was Sunkmanitu Tanka Ob Waci, not Steve. A one or two syllable word is unlikely to have a meaning that includes more than one concept.
4) The name was not in existence in the 1800s, and nobody knows what tribe it comes from.
Try [Googling] "1888 latoya born" and it's pretty obvious that Latoya simply was not used as a name until the 1950's. Apply this little test to the Indian name you're investigating.
DAKOTA: Baby name books claim that this is a Sioux name meaning "friend," but it is not. It is the name of a Sioux tribe, and no one within the tribe is called "Dakota" for their first name, as this is not culturally appropriate. It also does not mean "friend." It is a plural noun meaning "the allies." Naming your child this would be like naming him or her "Frenchmen."
KAYA: Baby name books claim this name means "little sister" or "elder sister" in Hopi. This is false. There is no word like this in Hopi, and I suspect this fraudulent name was intentionally made up because of the popularity of a Native American character named Kaya in the "American Girl" series of children's literature. In that book, the real name of the girl in the story was Kaya'aton'my', which means "one who arranges rocks" in Nez Perce. Kaya'aton'my' truly is a real Nez Perce word--the authors did their research! In real life, of course, a Nez Perce girl would never have called herself a nickname that was the first two syllables of her name, but since the target audience of young girls would never be able to remember and read a five syllable name all the time, I can sympathize with the authors' decision.
Below: People buy cute, romantic, whitewashed dolls for the same reason they bestow names such as Aiyana or Tala. I.e., because they're exotic but not too strange or "foreign."