Dear Antonio
Absoultely not. She is not entitled to a key for a property that she shares no interest in (your company bought the house so it is now in their name - correct? AND you are renting it from them or they are allowing you to live there on thier dime). Hopefully, all of this will be worked out soon with the mediator.
If my answer has been helpful, please ACCEPT my answer so I get credit for my effort to help you . If I can be of further help, let me know. Appropriate FEEDBACK is appreciated as is a bonus. Thanks ~ Michelle
