At least, that's what it seems like to me. I hope I'm not missing something.
The amount of abuse the human body can take before it's absolutely, guaranteed to be unrecoverable (forgoing brain or spinal injuries) is
ridiculous from a biological standpoint. The primary reason major injuries kill without treatment isn't the injuries themselves, but the complications that arise from them such as infection, sepsis, gangrene, etc.
Minimum height for semi-submersible oil rigs is about 15m (there's a very nice paper on it. Yes I actually researched this, did you guys think I wouldn't?) and 50ft is cliff-diving height. Survivable by normal humans, easily. An impact like that would cause her mostly-cauterized wounds to tear a bit and an increase in blood loss but not significantly enough (in my opinion) to cause her to bleed out so fast she'd be guaranteed dead at sea.
It's not abuse for the sake of character-pain. It's events that all culminate in a situation that leaves only one option remaining, and getting there realistically takes a lot to do so.
My question is... why?
What does Tattletale really contribute that the entire situation feels almost engineered to add Lisa to 'team Taylor'?
Because it's a struggle, a conflict, and for Taylor, an act of hypocrisy.
Designing from the ground up a body for Lisa isn't going to be easy, and it's something Taylor has to do. Propofol can be addictive, and if she takes too long she'll have to choose between that addiction and keeping Lisa in sensory deprivation which can cause people to go insane.
There's a sense of sudden realism in seeing someone dying in front of you, trying to save them, and then
failing. Taylor just spent the afternoon digging people out and rescuing them. When the bomb exploded she nearly lost her life, and was understandably
very shaken from it, as it destroyed her conviction in her invulnerability and immortality.
So she's going home to be with her dad and feel safe and then she finds someone nearly dead, like she was. So you have the compounding realization of mortality and emotional distress in a) coming within feet of dying yourself and b) watching someone practically die in front of you as you try everything to save them.
...That's trigger-event material.
The hypocrisy of the entire situation is that Taylor has spent the entire story bemoaning her loss of humanity and her inability to know if she's still Taylor ...and now she's condemned someone else to nearly the same thing, with both being from altruistic intent. She knows it. She realizes it. And she
hates it. Because now she understands both sides.
Anyways. Regarding the "adding Lisa to the crew" bit. I'd say wait and see. There's still a lot that can happen.
Edit: Reduced italics. Sorry if that came off a bit defensive.