Seller financing from a seller's perspective

[Arturo Fuentes]

Hello, 

I'm in conversations with my neighbor to sell me her house, and I want to pitch a seller finance idea to her. I want to understand better what this would mean for her, to use that as an argument to convince her on the idea. I understand that she'll be avoiding lots of fees and commissions (including agent fees, inspections, etc), and I also understand that she would be able to avoid capital gains tax as well (?). Can someone explain this better, specially the tax piece of it?

Thanks!