So glad to hear from you! I believe that your Margaret is indeed a sister to my Doris Panchin KOCH. Here is a listing of her with two of her sisters shortly after the death of their parents. My Doris is married to a Jacob STEPHAN. I have all of Doris' letters to my mom and I think she mentioned Margaret a number of times. I would love to trade information with you.
My home address is Deborah Slager, 205 S. Maple Ave., Polo, IL 61064
From the 1938 BIA Census of Tyonek, Alaska
Nicholi, Wilson 19 Full Native (listed as having no parents)
Panchine, Mildred 12 (listed as destitute orphan) Full Native
Panchine, Jennie 10 (listed as destitute orphan) Full Native
Panchine, Margaret 7 (listed as destitute orphan) Full Native

A couple of houses away is Doris with her husband and in-laws.
Stephan, Elia 62 Head Full Native
Stephan, Nellie 57 Wife Full Native
Stephan, Jacob 30 (son) Full Native
Stephan, Doris 17 (daughter-in-law) Full Native
Stephan, Steve 37 (son) Full Native
Stephan, Nora 15 (daughter-in-law) Full Native
Stephan, Terry 22 (son) Full Native
Stephan, Alexandria 22 (daughter-in-law) Full Native
Stephan, Terry Jr. 3 (grandson) Full Native
Stephan, Serafin 2 (grandson) Full Native
Stephan, Elizabeth 1 (granddaughter) Full Native

Deborah Slager (FireRaven)