Can I sue my stepmother?

My stepmother was involved in a scam. Giving away upwards of 350k to a man who turns out was overseas. My father had his own account and she was taking his social security check and giving it to this man also. After law enforcement was involved she was supposed to be banned from this account but went on to write about 14k in bad checks. Forging his signature. ( law enforcement has already said this is a civil suit and should be handled during a divorce) My father was bed ridden but of
Capable mind due to a stroke. While he was in the nursing home she sold my dad’s truck and also gave money away to this man. Also gave away about 80k of inheritance he received from his mother. After there was nothing else left money wise. She as his caretaker left him without securing care for him. He was home from his short stint in the nursing home. I did not have the resources
To care for him full time like he needed and ended up having to call social services as he was home in an unsafe environment. Finally we got
Him placement in a nursing home and she served him divorce papers while there. Unfortunately my father just passed away and they were weeks away from settling this divorce. So now she has the house and everything. She did not pay for his funeral or contribute in any way. They were
married 10 years if that matters. Question is do i have a legal leg to stand on to sue her for his portion of the estate?
Location: Tennessee