teafuelledradical I do wish you would stop offering to go to the loo with any trans woman who wants to go to the loo with you ! 
I know you mean well, and I know where you are coming from. But please read up on this stuff and try and get your head round it. Society is attempting to 're-define what it means to be female. Can you not see how very harmful this is going to be to all women, and especially to vulnerable women?
Genuine trans women who have a genuine dislike of their male bodies and alter their bodies with surgery and hormones still have the rates of criminality as other males.That is the finding of a long term study in Sweden. Sorry I cannot link to it because on phone. The same study found trans men (biological females) who transitioned also had the rates of criminality as males. They adopted male patterns of behaviour.
But we are no longer even toalking of transitioning! We are talking of identifying. That is all. If I identify as my next door neighbour's daughter do I get to live in their house, demand they pay my college fees! No. If I identify as a brain surgeon do I get to operate of people's brains? No! Please please read the links of many men who identified as women expressly to access women!
I know genuine trans women may well have had very difficult experiences, or hard starts to life but so do abused children, male or female, anyone who is the victim of serious bullying, perhaps people involved with addiction to alcohol or drugs, care system etc have all had tough times.
Do you want all those people in the toilet with you. AND even if you do, I don't want them in the toilet with me or my daughter! Or the hospital ward or shelter or, God forbid if I ever needed it, the rape crisis centre.
Why does your right trump mine?