I've tried getting a unique spearwoman but it didn't seem to take the cursed affix, is that normal? Do I just go with regular spearwoman?
TZ affixes are only applied to normal mobs. They aren't applied to uniques, champions, superuniques or minions. Minions can display non-functional affixes including those they would inherit from their unique, but they won't actually work.
TZ affixes are only locked in on bound demons when you bind a normal mob with level 5+ bind demon to upgrade it to a unique, and level 20+ to add aura enchanted (soft points both cases).
And I think the cursed affix on uniques may malfunction if they are bound in a game with a cursed TZ affix anyway, not entirely sure about that, but no reason to try to search for cursed TZ games to bind them anyway
uniques are the same in all TZ affixes, so the only thing that matters is what affixes they naturally spawn with. And you've got a 1/4 chance they'll get cursed and 1/7 chance the aura you roll on them will be holy freeze (and 1/4 chance they'll already be aura enchanted, with 1/7 chance it will be holy freeze otherwise any other aura means they can't get holy freeze). So all you can do is either bind a cursed unique spearwoman- already fairly hard to find- and get a 1/7 chance it rolls the right aura, or get extremely lucky and find the 1/28 chance natural cursed + holy freeze spearwoman. In which case she'll only have 1 other random affix, the aura enchantment is not optimal.