That area has such funky delineations between where one city ends and another begins, I think the city name is getting de-emphasized over time a bit.

Try delaware.

Quote from @James De Stefano: Quote from @Ned J.: I too would use the Happy Clause...... this obviously isn't working out, so I will gladly release you from the the lease with zero penalty and you can find another unit that better suits your needs...... otherwise I document everything and she can pound sand....This is another reason I only do M2M leases from day 1...... both sides are protected and I have WAY more options.Never relay on the immediate past landlord...... if they are a nightmare they want them gone and will lie to your face to get them gone.  

It also happens to be in a cul de sac. 

But she has a daughter who is living in Delaware.

Do short term rental guests in Delaware have any sort of squatter's or tenant's rights in Delaware such that I should try to avoid a certain length of stay? 

She moves quick too none of this la de da.

If you're working with a 1031 company, enlist their help to make sure you're considering the important variables..Many of our past and current clients have/are invested in Delaware Statutory Trusts. 

The house would then be a de-facto multi-family unit.

I'm the owner's nephew and de facto "computer wiz" because I am relatively savvy,  but I have never used any property management software before.