XY women have less testosterone than XX women

?? XY individuals with complete androgen insensitivity absolutely have testosterone, they actually have a shitload of it, because their bodies don't detect it, endocrine system thinks it's not making enough and makes more to compensate. That gets converted into estrogen but not like instantly (this also usually means they have a lot of estrogen)

but I mean there's also probably more than one disorder with XY karyotypes and female phenotypes, idk. You quoted something mentioning no internal male organs but what I am familiar with they still have internal male genitalia (i.e. testes) but these typically get surgically removed when the condition is found out since iirc they pose a long term cancer risk

but I mean also yeah either way it doesn't have any bearing on whether or not she's cis or intersex, whatever testosterone test she had