Should the non-refundable rental token amount be refunded?

I gave my flat for rent to a lady who was supposed to occupy the flat after 18 days. Before taking the token amount I clearly mentioned the lady that the token was non-refundable & to take the survey of the area to ensure it is as per her requirement. After a week, the lady pleaded & confirmed she wants to take the flat. The token money was exchanged, and we agreed to sign an agreement after 22 days as I was about to leave for a trip (out of India). In my absence, she was allowed to occupy the flat & I decided to not increase the rent for next year as well. During my trip, I received a message from the lady that she doesn't want to take the flat as it's not close to her kid's school. I reminded her that the token was not refundable and she should check this prior to finalizing the flat. Frankly, on humanitarian grounds, I thought to sort the matter on my return and refund her the amount. But the lady started blaming me and filed an FIR against me. What should I do now?