Should I file a small court claim because she owed the rent and broke the lease without a 60 day notice (written in the lease), or should I send it to a collection agency? 

@Bob CarrollYes, leveraged income to an IRA generates UDFI (Unrelated Debt-Financed Income) that will produce a need to file form 990-T and pay UBIT (Unrelated Business Income Tax).Look for a CPA who specializes in tax-exempt and non-profit entities. 

From the time of the decedent's death through tax year 2019, the estate has been filing fiduciary returns, passing the income and the tax liability through to the beneficiaries.

Keep good records and file taxes.

I file for "owner occupied" status and have the mortgage interest fully/partially deducted on my tax returns. 

Now he has filed a lis pendens clouding title to prevent sale , causing loss of good tenant for 3 months.

If that was stated in the broker agreement the consumer signed and then that was on file with that specific lender, then yes, it'd be legal. 

Eviction, bankruptcy, or felony being the most popular reasons. 

This way if there is a liability claim against them you can file it and the check goes straight to you.

   - Unless you file a memorandum the seller can sell to someone else.I'll never buy on a LO again into a sandwitch (multi years).