Letting a tenant sublease for the remainder of their contract

[Alec Khlebopros]

Hi, I have a tenant that is 1.4 years into her 3 year contract.  She wants to see what her options are in terms of breaking the lease, due to wanting more space now that she is married.  How would you guys handle it?  Would you allow your tenant to find another tenant upon your approval to take over her lease?

thanks

Alec