However, I think being able to get a feel for what motivates the seller is very important and helps to formulate a deal in which both sides win.

She got us the deposit and proof pretty quick, but it has been weeks of emailing her and texting her to send back the addendum with no luck.

My lease (i am currently renting) ends in mid June so that is my hard deadline and motivation for buying a multiunit property to "house hack".  

They then decided to add me to their group text message and volley attacks at one another off and on until about 7am.

Try to do this by text or email so you have written proof of your message and any response they send.If you don't get a response, you could hold the money and present it at court to show that it was not accepted.

You make your money when you buy so try and find motivated sellers or distressed properties so you can buy at a discount.

Full text can be found here: https://app.leg.wa.gov/billsummary?

That may motivate him to pay or move out early.

I sent a text message to the current tenant - he preferred text (who wanted to move out) that I may found potential tenant and asked if he wanted to do a walk through at the end of last month.

@Isaiah Webb These are good questions, because it identifies very quickly how motivated they are and how in demand their property is.