Great grandmother's name is incorrect in main record
My great grandmother, Beatha Belle Houston (LJG7-151) is listed as Bertha Houston. I realize that I can add Beatha as an alternate name. My question is: why is Bertha listed when every single record attached shows various spellings of Beatha or Belle: "Beatha, Betha, Belle, and Bell." Why is the lone misspelling being used as the main name? How can I get this changed? Shouldn't there be a consistent relationship with what sources say and the main entry used for a record?