All were able to resist it if they kept up the corporate formalities. 

From blogs and formal articles to podcasts, this site has added incredible amounts of value to my life and I look forward to doing my best to return the favor.I studied accounting and finance at DePaul University and was also one class short of a real estate minor.

I should also mention that LL never completed a formal walkthrough after any roommate moved in or out so she said there's no way to determine when the damages occurred (Even though she acknowledged that these damages happened before our lease started). 

I do not have past experience in formal property management (managing trusts accounts and trust accounting among other issues) and this is doing my head in.

You know how many formal evictions I have had to file?  

Some questions:Do I need to set up a formal partnership for this?

.*  Haha I apologize if this post is too formal/long for an introductory post.

We plan to have a contract written and notorized in order to have the formality of a business agreement to fall back on.Do you have experience with a partnership where one party provides the majority of the financing and the other partner the occupancy?

It doesn't have to be a formal 'inspection' to the realtor.

If you do #3, make sure you have your sister sign a formal agreement and no trespassing warning and get it notarized so she knows she can be prosecuted if she reappears.