Andre Norton and/or Teddy S ???

I have just finished reading "Beast Master" by Andre Norton, "Tommy, The Trials and Tribulations of a Girl" by Teddy S. and wonder if the two authors are one and the same?
The protagonists in both stories are Navajo and use some Navajo language words. "Na Ta Hey" is one phrase that is common to both stories. The similarity ends there. One story uses gender change and Andre Norton's does not. Though Andre Norton used more than one pen name. When she first started writing she used a male name to overcome prejudice against female authors.

It is interesting to mull this over.

Gwen