Judith,
The current list of Kansas soldiers held at Camp Ford does not include Frye's name and the online index for Andersonville (Camp Sumter) does not list either.
Do you have information on where they were captured? That might help track them down.
Also, have you obtained a copy of their Pension records from the National Archives? Quite often details on prison captivity can be found in the affidavits accompanying pension applications.
Best,
Dale