Need advice on a potential renter

[Julie Clark]

I will state upfront I already know what most people will say which is why I am posting here to get advice from more experienced landlords.

I have a single property that I am renting out.
The very short back story is I successfully evicted my first tenant. However, this took time and while doing so I was paying the bills for the property, then needed to clean and re-list, etc. All of which took time and money. I do not need to go over all of the eviction details but the first tenant was basically ghosting and I will never see another dime from him so before saying go after him for money that is not an immediate option.

I then finally had a renter who passed the backgroud, credit, and application process and wanted to move in. She scheduled a date to do the paperwork / money for the keys. The date came and went and she essentially ghosted. I am sure I was too nice and gave the benefit of the doubt that maybe something happened. I finally hear from her and she states she cannot move forward and was sorry. Frustrating, but I continued my search for a tenant. 

Currently, I am still looking and have not had many bites this time around. I had one person make an inquiry and was interested but has not done any part of the process so not someone I can consider a potential tenant yet. Today, the woman who ghosted called again and said she worked everything out and wanted to know if she could move forward again.
(This all occured, up to today, over about a week's time)

I found some good advice on here about giving 24 hours to get the security deposit to you which I will be utilizing going forward.

The bottom line for this post is I need advice on what to do because I do not want to keep having issues with this woman if she does follow through and get all the requirements done in order to move in. But, I also really need a new tenant in there because of all the expenses that came with the eviction before.

I appreciate your help and insight on the matter.