The raping is done by rapists, in my experience. Not penises. Not men.
I'll include sexual assault (since otherwise, in UK law, you're entirely wrong there), since that's what you mean - but go to the ONS. Rape is overwhelmingly performed by men, with their penises. Rapists are overwhelmingly men. To say anything else is ridiculous.
But what that has got to do with a transwoman is neither here nor there, unless you are saying
a) a tw is not a woman because her genitalia may not be perfectly aligned (in which case who made you god???)
Not God, but humans are a sexually dimorphic mammalian species. We have males who have penises (and other male sex characteristics), and females who have vaginas (and other female characteristics). That's how human biology works. A transwoman is not a woman because a transwoman is male, and women are adult, human, females. You can try to redefine the word if you like, and have had some success, but round here we stick to the dictionary definition.
b) transwomen are known to be statistically highly likely to rape
Not 'very high' just higher than women - what with them being male, and, in many cases, still in possession of the equipment. Statistics show us that this is true.
c) India looks like she wants to use a foreign object inserted into Jenni's orifices against her will (for those who are ignorant about what rape is!!!)
No-one said that, what a strange leap to make! I think you might need to step away from the keyboard and calm down.
d) all penises indicate potential to rape, in which case, you know absolutely f all about penises and probably should get out more.
Well, technically, yes, they do - in practise, most men don't rape, but in theory they are all equipped for the purpose (and as you mentioned, don't even have to use it if we include sexual assault) - I'm not sure the point you're trying to make here.
What I would mention is that women, are on average smaller than men. I could probably fight off my sisters, but wouldn't stand a chance against my brother or male partner (luckily, I can't imagine a situation where that would need to be tested). This is the secondary reason to be more scared of sexual assault from a transwoman than a woman.