I would avoid going to the city, at least initially, because if the developer screwed you, and the ball is now in your court to legally divide the units, you want to stay off the city and their compliance departments radar as you work through your options. 

They typically want 2 pay stubs, 2 tax returns, insurance declaration pages, copies of lease, etc.

In and out of the court multiple times. 

Will this become an issue if things ended up in court?

I have bought foreclosures in Philly at 300k at court house and flipped them for 500k.. so I know that inventory is there and there is some HUGE momentum in regentrification and infill building.  

Com are houses that the bank didn't want to realize at the sale date on the court house auctions .

A recent court ruling came down against a landlord/owner who set a utility limit with a tenant and then imposed an "over-use fee" when the limit was exceeded. 

I would tell her that she will get LESS money if they have to fight about it in court.

It could be because you will have to evict both individually and both will need to go to court in order to get what is owed. 

Does it take away the need to go to court