[jcd]

Hi, I was looking for the same and I found out that the texture itself is located in file \data\data.kfs\tex8.dds which is referenced in a text file "\data\data.kfs\itextures.dat", just look for

  block {
    filename=heroitem_wife_girl_ugly.png
    in_tex_pos=954,1242
    in_tex_size=106,147
    geom_pos=0,0
    geom_size=1,1
    mask=297103,1948
  }

so I guess you can either modify the dds or pick some nicer texture from the original dds file and use reference to that one instead in your "wifes.txt"