Need help with real estate deal gone bad

The very sad part of this whole episode is that the seller is a dear friend.
She is selling her property at Villas de Golf.
I needed more space.
We signed a contract the first of March, I gave her a check for 20,000. She had a tenant at that time and I agreed to wait until the tenant was to move out. Approximately the middle of September.
She filled out the contract, there is a clause that if either party was unable to fulfill the contract by September 15th, 2016 for the fee of $1.00 the contract would be void.
In May I lost my funding for the condo and contacted her immediately. Since that time she has refused to communicate with me, and naturally never refunded my money.
I have waited and been kind and now I think it is time to take action.
That is the story.
I will be in Ixtapa Oct. 22, to see Sr, Galinda with contract and copies of the cashed check.
Thank you all for your assistance.