Tenant's cosigner asking to break lease due to medical reasons

[Carlos Lez]

I rent to students around a university. It is mid year and this tenants mom (co-signer) wrote the following note;

I am writing to formally request the early termination of my child's lease at location in San Jose due to a medical illness that renders him unable to continue attending college. He will be taking a leave of absence for the  year.

Given the unforeseen nature of his health condition we would appreciate your assistance and consideration in addressing this situation. We are willing to provide additional documentation to support our request and discuss any potential steps to ensure a smooth and fair process for all parties involved.

Thank you for your attention to this matter. We appreciate your support and understanding during this challenging time.

A medical note attached simply says "1 year leave from school for medical reasons"

Please advise on what is the best recourse in handling a situation like this? It may not be easy to rent at this time of the year.