This scenario does not sound at all unusual, I wonder why you think this practice is out of the ordinary?

***(This may seem unusually harsh or strict.

And I really don't think you should go after this tenant any more than trying to get the insurance to pay for damage.It's not unusual for water to end up outside of a bathtub/shower that uses a shower curtain. 

The BP community here is full of great, unusually helpful people, and I believe that every response posted so far was offered in an honest attempt to provide assistance.

Not only does she have an unusual name, but her co-conspirator has the same last name as her children.  

@Jake Kozul That's not unusual at all actually.

While the driveway space isn't covered, it's still closer to the front door than the street and the tenant never has to worry that they'll have to park down the street bc there's an unusual event going on in the the neighborhood. 

The downsides are the high barrier to entry and time it takes to close, but the re-sale value is always high and time it takes to sell is unusually quick (about 75 days on average), but my listings usually enter contract in under a month.

If she doesn't qualify, let her know so she can move on with her housing search.In a tight housing market it's not unusual for a people to try to get a jump on a property before it's advertised on the open market.

Another tenant I had, had simply forgot because she extended her vacation an extra day and was very apologetic - I called her because she had always paid on or before the first and it was unusual we hadn't received it yet.