Nanny should have kicked some out...
There are 4 people that Nanny should have definitely kicked out of her house. They are as follows:
Pauline and Jimmy - If these two fools didn't kill each other they would've harmed Nanny or one of the other boarders.
The schizoid guy Lonnie - I mean he attacked her over keys for goodness sake.
Freddie Cobbs - It was obvious that he would snap at just the site of Jimmy.
Nanny was nice but nice will get you killed from loonies.