would the member be a wholesaler maybe and the end buyer backed out.. did you get a POF  ( proof of funds) or any type of clear to close from the lender

Did he have an LLC in the US, and Proof of Funds that he could send you?

I left a message saying I hope they didnt get the dog and would look into the legal process of handling the situation, and to please call me back.So I have no proof they have gotten the dog, although it seems pretty clear.

Everybody says they know where to find it but no one has any proof it exists. 

Should I require proof of funds ???

If you fixed anything during the turn, you could have deducted from deposit (unless she has proof that it was preexisting condition).Normally when we evict a tenant, no deposit is returned at all.  

I will keep my mouth shut about such things, and yes it is clear to me now that she was extremely irresponsible and disrespectful, though I did screen her father very well, full credit check, employment check, background check, bank statements etc, clearly that didnt mean much. i took a chance with this one as my first tenant and I learned some valuable lessons.So, here is the current situation, she moved a lot of stuff out today and she will no longer be sleeping in the apartment, she told me the 3rd was the last night she will be there and that she'll be out by the end of the week, But now they are refusing to give me a date that she'll be officially out, I think they are now going to try to hold the keys until november 30th.. so my thoughts are if I show the apartment this weekend, and all of her stuff is gone and I have proof of text messages saying she'll be out by the end of this week, I should be able to legally change the locks and rent the apartment right?

If the buyer wants out and the buyer can not show proof of a "material latent defect" that they did not already know or should have know then the seller can keep the deposit.

Co-op Commission Approved, List Price Approved by Short Sale Lender, A Buyer’s Premium of 5% or $2,500, whichever is greater, will be added to the Winning Bid, Financing may be Available, Property is sold as is, where is, An Earnest Money Deposit of 5% of the purchase price or $2,500, whichever is greater, is required along with Proof of Funds, Co-op commission subject to Short Sale Lender’s Arm’s Length Affidavit" 

@Leo Don the issue is that the court needs “proof of service,” meaning the defendant was served with the summons.