Answer: Fash cannot
Step-by-step explanation:
When entering a contract with someone, both parties must be of sound mind to prove that indeed they were mentally capable of being able fulfil their role in the contract.
Gaya was a lunatic who had just escaped a psychiatric hospital. He therefore was not of a sound mind when he signed the contract so Fash cannot enforce the contract because it was not even a contract in the first place as one of the parties was incapable of getting into a contract.