Throw away account... sorry for the grammar, in a rush.

My current roommate has lived with me on and off for the last 2 years. (I'll call her Shelly.) She has helped me out with rent when I needed it and helped look after my house/pets as my work needs me to travel overnight a lot. When she moved in 2 years ago, it was just Shelly, my dog, and I in the house. Since then our house has grown. My fiancee lives with us, as well as her bf, and she got a dog. So that's 4 people, 2 dogs, and my reptiles in my house. My house is on the smaller side with smaller bedrooms. We mainly occupy the main floor while she stays downstairs and we have to share the kitchen. It's maybe 800 sq ft per level? She has a bathroom downstairs with a stand-up shower (important later) and I have a full bath upstairs with a tub. It's also a "semi on suite." Meaning the bathroom has 2 doors, one that leads directly into my bedroom, and one into the hallway.

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Shelly has been driving me nuts for several different reasons.

1. Her dog. I know everyone has a different perspective on how to raise a dog. I used to be a dog trainer. She's not training him bc she believes that "she'll just take advice from me!" Well, I don't have the time to train her dog! I work too long and hard at my job. I don't have time to dedicate to a puppy and that's one of the main reasons I don't have a puppy. Yes, I have a small old dog but he's trained the way I want him. Not perfect, but, he knows basic manners. Also, have I mentioned... I'm ALLERGIC to dogs? Half the reason why I changed careers. I suck it up with my guy because he's little but he's also 13 yrs old. Once he goes, I have zero intention of getting another dog unless it's a poodle and that won't be for YEARS down the road.
2. They don't really clean up after themselves. I've had guests that come over and they want to see my reptiles. Which are kept in the guest room downstairs. There are 3 bedrooms down there. One they use as a bedroom that has all of their things in it, one that's like their "TV room" which I still have things in, and another that's a guest room/reptile room. Every guest that has come over has said the basement smells AWEFUL. Some is dog smell, some from him making potty mistakes (he's a puppy) and others from who knows what else. They also don't put dishes in the dishwasher or really clean up pots and pans after they cook.
3. They have been making my utility costs go through the roof. Keeping windows open in the winter, running a space heater at all times, and just generally being extra people in the house.
4. She keeps demanding I do things around the house. Fix this, do that. For example, she demanded I fixed the doorknob on the door at the top of the stairs. Ok.... it wasn't really broke it just didn't latch all the way so their dog could just push on the door and it would pop open. The door has ALWAYS been like that. Well... we wouldn't have this problem if she didn't get the dog I told her I wasn't a fan of her getting in the first place! She also moves my things around that are downstairs all the time which is frustrating.
5. She keeps saying she's going to move out. Then go!!
6. She keeps using my things. I bought new ice skates last year. I ran into her in front of the house when she was parking. She said she was coming home from skating. Oh? Where did you get skates? "Oh, I just used yours you weren't using them, btw you need to get them sharpened." Uhm what? I got them sharpened when I BOUGHT them. I haven't been able to use them because I got injured at work and haven't gotten the chance. She also went through the bags that I alloted to go to "donation" and she took what she wanted. I didn't tell her she could do that. My one side of the family is very poor... my plan was to give it to them. But, she helped herself to it first.

I guess I'm just at that age where I don't want roommates anymore (30/f) and would like to move on with my fiancee and I. She recently had to go out of town to have major surgery that she has been waiting for, for years. I'm happy she got her surgery BUT she JUST informed me as part of her "recovery" she has to take 3 baths and 1 shower a day. Meaning she's going to be using MY bathroom. I am the main breadwinner of the house and I need my sleep as I work shift work/on call.

I don't want to be a jerk and I'm more than willing to give her time to move out, but, how much time? How should I ask her? What if she asks me to take her dog? I just want my house and my space back.... The latest story is that she's moving out in June... I doubt that will happen as she has actually moved out before and moved back 2 or so months later.