Good question right? Now I have seen in various circles the questions rise again on rather trans women are "allowed" to use the "woman" word alone anymore or ever.
The easiest answer and the one most completely wrong is "child bearing ability" alone makes a woman. The problem with the idea comes with all the cis women born without the ability or will power to have children. Does that make them any less a woman? No.
Transgender women have just had a different path to express their femininity. Our femininity lies in the same places a cis woman's does- between her ears and in her heart. Gender identity is not about your physical sex or the clothes you wear but an innate sense of who you are.
Sooner more than later (maybe) society is going to understand we (transgender women and men have been around since ancient times and allow us to go our own way without roadblocks and recently:
“The medical profession has tried - and failed - for over 100 years to change the brains of trans people, in a bid to make their gender identity congruent with their body. Most clinicians now agree that the best solution is to realign people’s bodies to more closely match their gender identity, not the other way around.”
The UK Huffington Post recently carried an article which I have quoted from ( here ) Of interest is the fact feminists are once again attempting to distance themselves from the trans woman community for mainly the scientific failures mentioned above.
What I also don't understand is why now with attacks rising on women of all types (physical and legal,) feminists don't want to add to strength in numbers, our numbers.
Finally from the "Huffington Post" : “Being transgender should not be seen as an attempt to invalidate or diminish womanhood (or indeed manhood) any more than being gay should be seen as an attempt to diminish heterosexuality - they are just different experiences deserving equal acceptance and respect.
“Science cannot fully explain the experience of being trans. The suggestion that seems most likely is a neurological difference in the same way as dyslexia or left-handedness. It is a very real feeling which has been known in every culture throughout history.
“One does not need to understand it to simply accept that it is. The fact is no trans people can explain why they feel as they do. How do you explain why you are left-handed? You just are.