The hairstyle problem is due to the GUI options not matching the code options, as the GUI is missing the bald hairstyle. In Mansion.tscn replace
items = [ "straight", null, false, 0, null, "ponytail", null, false, 1, null, "twintails", null, false, 2, null, "braid", null, false, 3, null, "two braids", null, false, 4, null, "bun", null, false, 5, null ]
with
items = [ "bald", null, false, 0, null,"straight", null, false, 1, null, "ponytail", null, false, 2, null, "twintails", null, false, 3, null, "braid", null, false, 4, null, "two braids", null, false, 5, null, "bun", null, false, 6, null ]
and it should work. If you change the program folder file then the change will vanish if you re-apply mods. If you apply it to the file in the mod folder then you need to re-apply the mods(just press "Apply", no need for the full process).