Well I always choose, in the beginning, to have her not worried or scared and treat her like an equal. I never even have her clean my room as one of the choices in the kitchen. I would never degrade her like that because I have seen pictures of her topless or whatever walking through the city with the MC. Just not my cup of tea.
I sure as shit wouldn't treat Jin, Sylvia and ESPECIALLY Nia like that. My MC has more than enough love to go around to the point where I don't want anyone feeling left out.
I hate harem games, that I've said in the past throughout many threads, because I don't have that one-on-one storyline ending from beginning to end, but I LOVE this game, and this is the only exception to that no-harem rule.
I don't know if I am right or wrong where it comes to Lin Love or Slave/Degrading route, but that's always what I've done in the beginning, have her not be scared or worried and to love my beautiful, adorable, little elf girl.