There is a process to this whole thing and I'm not sure how I should explain that without being rude.

I know you asked a question and you are looking for an answer on the question you asked... but consider this.If a toddler lives in a house right on a busy highway, and the only thing in between that kid and raging cars zooming by is a little gate that is locked... and that little runt asks you "Yo mister, how do I open this gate", are you going to explain to him how to open said gate, or are you going to tell him, "don't open the gate, it is dangerous".Right?

Explain to her that the security deposit is used to cover damages left after move out, not rent.

I've seen many deals pass by because a Seller couldn't meet a showing time window.If your Agent suggested only offering under cash, and conventional loans, they hopefully explained their rationale, which is typically "faster, easier" closing.

It explains the importance of creating your core four.

Investors and owners should be aware of these pros and cons when deciding whether to obtain a BOV/BPO.[1][2][3][4][5]Sources[1] Broker Opinion of Value in Commercial Real Estate Explained https://fnrpusa.com/blog/broker-price-opinions/[2] What Is a Broker Price Opinion (BPO)?

Just write a note on the bottom explaining the change, all parties sign, all parties get a copy.

The deals I have done I always explain exactly what the plan is and how it works.

Could you possibly explain that to me? 

I am a retired financial planner (more like disenfranchised), and I deliver a lot of CE courses to RE agents and their clients in Colorado, and I'm always thinking of helpful ways to explain real estate and financial concepts.