My buyer's agreement versus standard purchase agreement

[Tommy James]

I am a real estate investor (10 years now). I have a property under contract with the seller. I found a buyer who has a realtor working for them. The realtor is requesting that I and the buyer sign her (realtor) standard purchase agreement. The buyer has an FHA loan and would need the property appraised and the buyer is also willing to do the work that is needed to satisfy the bank. Question: Should I use the realtor's agreement or my own buyer's agreement for the buyer to sign?

The realtor does not have my name or my company's name in her standard purchase agreement at all, just the seller/owner and my buyer's name. How do I benefit from this?