My father passed away without a will, leaving behind an apartment. I was pressured by my mother to give up my share as a co-owner, and I agreed initially through email. However, I never signed a formal release deed because I realized they weren't being h

My father passed away without a will, leaving behind an apartment. I was pressured by my mother to give up my share as a co-owner, and I agreed initially through email. However, I never signed a formal release deed because I realized they weren’t being honest. Later, my mother sold the apartment without telling me and without a release deed. Is this sale legally valid? Can I fight it in court? Could you recommend a lawyer who can help me?