Unless you are planning on getting out of the deal without reason it would make sense to put an EMD in to sweeten the deal.

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Can sweeten the deal with big EMD if that's something the seller cares about.  

All it does is sweeten the pot.If your LLC is part of a proper business entity structure, yes - it (the entity structure, not the LLC alone) will protect YOU from most levels of liability.

I will try and give you the best breakdown of the deal and maybe you can give me some options to maybe sweeten it or not lose it but at the same time of course I want to make as much as I can.  

If your cash out of the building is 1.3 times the mortgage payment, you should be fine (that is what they call the Cash to Debt ratio), assuming that you own this in your name or you co-sign the note with the owning LLC, your income will sweeten the pot for the bank, if you have a ratio of 1.3 or above and the bank says no to an 75% LTV ratio, go to another bank.

You can tell what the property looks like but you must know what market rates are.If you are going to be a wholesaler, please learn what investors want, what is market cap rates, and what are going rental rates.I think owner financing sweetens the deal if it is under market rates.

Any suggestions on ways to sweeten the pot for her?  

Sweeten their return if your return exceeds $x.  

Assumptions will definitely sweeten the pot for a buyer-seller transaction particularly when I locked in such a favorable interest rate.