So I've been dating this girl for about a year. Pretty much everything is good. She sings, plays guitar and keyboard and I play Bass with her and another girl that plays a cajon. We're into the same stuff, same music and could work together. But I HATE her sister. She lives upstairs at my girl friends house for free. The room up there is about 600sqf with its own bath room. Every other day a package from amazon.com comes via UPS but she doesn't have rent or utillity money. She also has a poodle that pees on stuff quite often, which she just leaves. She always buys new camera crap and her cat barfs 2-3 times a week and she just leaves it. Am I wrong to have no respect for someone who is 40 and childish? My girl is too nice and avoids conflict at all cost, but she constantly complains to me about her sister A LOT. Its not my house, or I would have evicted her when she started buying crap and not paying bills. What would you guys do?