I had 2 avalons mining on 50btc from day 1. 173BTC was mined in total, I only ever withdrew +/- 50% of the coins to cash out. 91 BTC was definitely lost over here

. It's pretty disgusting really, disgustingly painful.
For $91k, I'd be tempted to hire a hitman since the law won't be able to help you. Maybe somebody already has which is why we haven't heard from them since !