The family is suggesting that she was murdered because they cannot fathom why she would commit suicide. But they are also downplaying posts she had made to social media about battling depression and post traumatic stress disorder. And they are saying they don't believe it was in her nature to be argumentative with police, though she was.
They are also suggesting that video showing no one going in or out of her cell between being placed there and being discovered having apparently hung herself has been altered.
Their claims are being investigated. It is disturbing to me how many people are just willing to accept this speculation and pure guess-work, from people who have zero knowledge of the facts, but who are obviously and understandably upset, and start jumping to all sorts of wild conclusions.