Just a general, nitpicky question....

Buyer leases back the house to the seller for 2 months.
Buyer has a home warranty.
During the lease back, the A/C breaks.
It is covered by the home warranty.

Typically, who pays the service fee? Buyer (landlord) or seller (tenant)?

14. REPAIRS AND MAINTENANCE: Except as otherwise provided in this Lease, Tenant shall bear all expense of repairing and maintaining the Property, including but not limited to the yard, trees and shrubs, unless otherwise required by the Texas Property Code. Tenant shall promptly repair at Tenant's expense any damage to the Property caused directly or indirectly by any act or omission of the Tenant or any person other than the Landlord, Landlord's agents or invitees.

it's like my old compliance officer at KW used to say whenever we asked her anything,

"What's the contract say?"