Theoretically? Yes.
In practice? Firstly, there's the issue that FA points out, which is there's nothing special about Bess physically. In her base ship-side content, So can either repurpose a Tarkus sexbot or straight up build one herself, so she gains a physical form. Now, if you were either particularly cruel or straight up intend to treat Bess as a plain sexbot, you could have the capability to use Bess in this way anyway. Indeed, So should notice that you already have a sexbot lying around and propose she use it. But if I'm honest, I don't particularly like the thought of it. So can easily magic herself a body anyway, so what's the point beyond essentially killing a sentient being?
There's plenty of scope for So to have fun with Bess, as surely as she can have fun with you in her bad end/planned dom path. If you have the capability to slow down a helpless, simpler sentient's perception of time and then inundate every single one of their sensory inputs with shifting, sheerest ecstasy for a week, why wouldn't you do that? I really want So to be able to do all sorts of things to your crew, if you let her anyway. But there's a particular problem with Bess.
It's known as Ember's Dilemma. Although I've yet to properly engage with all of Bess's content, on the surface I doubt I will be able to overcome it. Or in trying, I'd drag my own character into a similar sort of mire.