Early lease termination of 1 year lease

[Vannak Kann]

Hi All,

Currently renting property in Fresno, CA. Tenant moved in in 02/01/2015 and lease won't end until 02/01/2016. However, on 04/01/2015 tenant told me that she probably want to move out because of the work issue and her daughter/son in law who live with her want to move back to Mexico. Tenant expressed that it will be difficult for her to pay the whole rent if her daughter/son in law move out. ( they are not 100% sure if they are moving in August/2015).

The tenant is letting me know as a courtesy. My question is:

If she is letting me know a couple  month ahead like this, What should I do with the deposit? Give her back or take it? and terminate the lease agreement?

She also express that she can continue to live there if insist ( which i don't think i can force her) I'm afraid that if she continue to live there, she might not be able to pay the rent? 

Please let me know what the best solution in this case.