You probably need to present this person with an X-day cure or quit notice before you can proceed with the eviction.

Do verify that there is only $15K needed to cure the mortgage.  

Last thing I needed was to have the DOS clause come up and a loan to be accelerated by the lender right after curing the default.Whether something is legal in all 50 states or not should be answered by an attorney. 

Pay for a title search and ensure:You are bidding on a first mortgage (not a second or third, and not an HOA lien)There are no title defects that would not be cured by the foreclosureThere are no large liens on the property you'd be inheritingThere are no open code enforcement cases or liens on the propertyAmount of past due property taxesThis is just off the top of my head.

Beware of posting past deals (which are considered tombstone ads), as they may be construed as conditioning investors for future investments, and thus, the first step in making an offer.This is a case where an ounce of prevention is worth a pound of cure.

BUT please note that time is not a cure-all --- there are issues that time cannot fix.  

The recorded covenant states that the HOA must send final notices to cure violations via certified letters.

If you issued her a cure notice (notice of violations for her to "cure" within a certain period of time), and she didn't cure the items, then you have basically diluted your demands to her.My opinion is that she DEFINITELY needs to go!!! 

Additionally, this may present a cloud on title as it sounds like the adjoining land was not sold properly to the neighbor since they didn't formally address the metering.I would recommend that ALL of your communication about this be in writing, AND you issue the Seller a cure notice to formally request the info. 

To take an old quote from Benjamin Franklin, an ounce of prevention is worth a pound of cure.