Warning, this is kind of a long story so I'll try to be brief but include the necessary details 

I've been friends with this girl since we were 14 (call her R). We went to different high schools and never saw each other much after graduation but kept in contact on social media. 

This past October, she calls me out of the blue and says she's in Orlando where I had been living for the past four years, but she and her fiancee (we'll call her N) need a place to stay because the lady they moved in with had a psychotic break and threw them out at 3am in the middle of Pine Hills. We let them move in with us but make it clear that we're moving to Melbourne in a month and they're welcome to come with us, but we won't be in Orlando much longer. 

So we all end up moving into my and my fiance's new apartment. They also need to bring their dog and cat because the guy that was watching them in another town had to move to somewhere he couldn't take them. 

So the final tally is me, my fiance, my friend R, her fiancee N, their intact male and female cats that have to be kept separated, their dog, plus our dog and seven cats that have to be kept in our bedroom because their dog is untrained and a moron.

Since October all of the following has happened:

-Found out I was pregnant

-N came at me while I was 5 weeks pregnant because we got in a shouting match and I choked her out (because I'm an amateur mixed martial artist and jfc I'm not gonna fight someone while I'm pregnant)

-Found out N has a misdemeanor warrant out of Texas for theft of service 

-Found out N also has a misdemeanor warrant out of Minnesota for violation of probation stemming from an assault charge at a bar

-N and R broke our hallway closet door because of one of their arguments (which they will be paying for)

-N and R fight CONSTANTLY, ranging from annoyed disagreements to screaming so loud I'm afraid the cops are going to be called 

-Their cats broke the living room blinds (which they will also be paying for)

-Their female cat may be pregnant because for some reason they haven't spent the $20 at a low cost clinic to spay or neuter one of them

I have no problem with R as she has not done anything to wrong us or annoy us. N is the root of all the issues. I feel bad that anything we inflict on N will come back to R but at the same time when you're a couple you're responsible for each other decisions and need to think about how your actions are going to affect more than just you.

I told them by June when I reach 6 months they need to be out with absolutely no exceptions and that I don't give a damn what their situation is. 

Am I being too lenient or AITA?