I looked into Ancestry. In 1920 Charlotte May was living with her family in Nez Perce County in the "Orchard Precinct" southwest of Lewiston. -- (edited)
No address in 1920 but in 1930 her family was living on "Diagonal Street" which now appears to be Thain Ave.
On the 1900 census, Charlotte's 52 year old widowed grandmother E S Pierstorff was living in a home she owned at 228 Silcott Street in Lewiston, right near the rail yard. Charlotte's father John, then 24, was living there showing his occupation as a "stock herder." In 1910 Elvia or Eliza was living in a house she owned at 518 3rd Ave, along with her kids Vinnie, Marion, and Nola, now in their 20s. You can see from the record that Charlotte's grandmother had had 14 kids, only 7 of whom were still living in 1910.
street map: https://www.google.com/maps/dir/228+Silcott+Street,+Lewiston,+ID/518+3rd+Ave,+Lewiston,+ID+83501/@46.4164455,-117.027116,14z/data=!4m14!4m13!1m5!1m1!1s0x54a0355d3c3aa28f:0x78bf57998a670d9c!2m2!1d-116.9908714!2d46.4174384!1m5!1m1!1s0x54a1cab5a42476a7:0xb07621f02f4db64d!2m2!1d-117.026312!2d46.4179488!3e0?entry=ttu
Here's Charlotte's Find-a-Grave bio with Lewiston named.
https://www.findagrave.com/memorial/105855902/charlotte-may-sipes_chaffins
