Existential ideology!!!
Two distinct themes do rise, one of embracing the true self that of a woman you were born yet complicated by birth genetic defect, the other of living in a conceptual frame work of stereotype, your fiend had referred to as "Normal"
By stepping into a realm of SELF and no longer obeying the societal construct of gender, you basically have crushe the stereotype of what it is to be YOU. Your friend however does not see it from such perspective, but only notices the AB-normality of your situation.
Relativity comes to mind, and you your self feel well, YOU, so now you are truly NORMAL as suppose to before the transition, for the friend of yours is the other way around.
Then also the aspect of true identity comes to mind. YOU are as much a woman as any woman born to this planet with some sort of reproductive/genetic malfunction at birth, such as XXY XYY chromosome identity etc.
There are lots of variants in the TG box, however for women identifying as woman one thing remains true, and that is being born a WOMAN! and not trans anything as that is simply just description of condition and not the SELF!