I'll give her a respectful response when she gives me the respect of actually reading my argument and not ignoring it for some offensive strawman.
the straw man you have created is an assumption that transsexual people have surgery to meet gender norms, or because of societal pressure to conform to a standard model of femininity - as you said, for similar reasons someone might have plastic surgery. Now this may be the case for some of the wide spectrum of trangendered people, some of who like most people in society are gender essentialists, or increasingly commonly have a queer perspective on gender as a chosen performance that can be played with, adopted at will etc
But that is not transsexuality, which is not a perceived mismatch between born sex and gender expectations, but a strongly felt discord about one's own physical sex which usually manifests, often in infancy, as a type of bodily dysmorphia, hatred for genitalia, revulsion to secondary sexual characteristics at puberty such as chest hair etc, a feeling that the neural map of the body is wrong - that the brain and body don't match up, some female to male transsexuals even report feeling of phantom erections etc
I have a freind who's currently transitioning and have met with several of her mates who have previously transitioned and talked about this at length for what its worth. All said the clothes, the gender expression etc were secondary to the mismatch and discomfort they felt in their own bodies, often from early childhood and which went away after transition ie they felt cured, even if their gender expression in one case was very androgynous - it wasnt about gender to her it was about physical sex. Despite feeling cured, they may still have a desire to meet gender expectations, like most women, so a slim figure, bigger breasts etc - but this was not a dysmorphia in the sense that it left them feeling suicidal, unable to cope, self-hating, in denial etc - the hormone treatment and surgery had ridded them of transsexuality, but the feeling to conform and be feminine that many/most women feel remained.
Ive never heard anyone transsexual say they have had SRS surgery to meet gender expectations, but you still insist on this being the driving force, which then develops into your argument that a transsexual's need to alter their body is something socially constructed due to a gendered society and can't possibly be for any other reason. Your entire position is based on misrepresenting transsexuality, deciding for yourself why trans people act as they do and then drawing conclusions from that whilst ignoring not just the medical testimony of thousands of people but also the current neurological research which suggests at least the possibility, and increasingly even the probability of a biological driver for transsexualism.
and it's 'he' by the way, sloppy in the context of this discussion.