This is just amazing!
The spikes are working really well for that. It must be horribly painful for Jolina to get her leg pretty much completely destroyed this way.

I like how all the girls are reacting slightly differently but still in a very natural way to their situation: Hazel and earlier Mercedes didn't get any time, their torture started with some really bad stuff without any warning, so they are just confused and didn't have a chance to process what's going on. For Mercedes it was over before that could change, maybe Hazel will get enough time to understand her situation.
Jolina is just completely in denial. It seems like deep down she understands her situation, it's just so horrible she isn't ready to accept that as reality.
And Jessica is too innocent too understand exactly what's happening, but she does understand these are bad men doing bad things and she can't do anything about that, so her only reaction is fear and desperation. And that will only grow when even worse stuff is happening to her and to Jolina.

I like all of those reactions, and there are of course still some other possible reactions, for example: Begging for them to stop, offering to do whatever they want, trying to be tough and to talk back at them, trying to resist in any way possible, or even being smart and trying to find a way to escape (but eventually failing).