Why is it depressing? The company needs to know where it stands. This tweet could mean anything from her being stalked to legal representatives taking pre-deposition interviews.

While it seems pretty cut and dried to me that Uber is in the wrong, don't they have the responsibility and the right to investigate for themselves?

Holder is supposedly investigating the situation for Uber.

A 2nd firm looking at Fowler specifically would imply a different (addl) strategy--like litigation against her personally, or a PR campaign to smear her.