Breaking a lease in Oklahoma
I live in Oklahoma. I signed a 12-month lease but asked the landlord if I could break it upon finding her another tenant. She said that would be fine. I bought a house is the reason I broke it. She also told me there would be no penalty for breaking the lease even though it states in my lease that she could penalize me. I didn't get her "word" in writing, but she verbally stated to me and also to my roommate. I told her also, as a goodwill gesture, that I would find tenants to fill her other vacancies which I did. She paid me a $50 referral fee for the one I got her.
Now she has changed her mine and doesn't wish to give me my deposit back.
Do I have a leg to stand on in court? I KNOW I should have gotten it in writing, but her exact words when I asked for that were, "I don't make my living off keeping deposits. I'll refund your deposit." She also emailed me that she would refund it but then sent me another one saying she changed her mind.
Is she bound by her verbal agreement to let me out of the lease without penalty and to return my deposit?