Please provide a link to a source where Khelif has stated she has periods and a female reproductive system. I haven’t been able to find any so would find that really helpful. I’ve only seen Khelif stating that her passport and birth certificate state female, therefore she is a woman. If she has the DSD which is widely speculated (5ARD) it is categorically impossible for her to have periods and a functioning female reproductive system - in fact, at puberty it is likely she developed external male genitalia (they were always there, but once the testes she was born with were activated at puberty they would have become much more obvious). This DSD is colloquially referred to as “penis at 12.”
It has been stated that the failed test was not a testosterone test. Therefore the “this is a woman with high levels of testosterone” rumours which are circulating are incorrect. The only real alternative test though is a chromosomal test, which presumably has shown these athletes have XY chromosomes and therefore have 5ARD. 5ARD only develops in biological males, who can appear superficially female at birth due to ambiguous genitalia but will go through male puberty. Please read up on Caster Semenya for a more famous example of this.
None of this unfortunate situation is about identity. We don’t really need to consider identity in sport, in terms of how athletes dress or their pronouns or what bathroom they want to use. It is about biology, and we do need to know what biological sex they are. I feel very sorry for Khelif, as I can’t imagine how it must feel to grow up as a small child believing you are one sex and then to reach puberty and find that biologically you are the opposite. If she chose to carry on living as female I think a lot of people would have a lot of sympathy for her. However, that cannot extend to entering the female category of sport, which must be purely based on biological definition of sex, not gender identification. I cannot sympathise with her using the advantage that being a biological male has given her - whatever she believes about her identity - to enter female sport.
I also note that neither athlete has chosen to publish results of chromosomal testing demonstrating that they have XX chromosomes, which would put this debate to bed, nor have they taken the failed tests to the CAS (Court of Arbitration for Sport). Again, rather than just reiterating that your passport says woman therefore you are one, surely you would want to build a robust case and lay the whole thing to rest? If not, is it because you can’t?