When I first saw the crossdressing genre in the Games my first thought was 'please, please God let there be at least one girl!Severus fic.'
The crossdressing/genderbending genre is focused on Harry because he is, presumably, the beautiful one.
What always bothered me about that is that Harry in canon is never described as very handsome and certainly not beautiful. Short, yes, and that seems to be what the genre is based on to a certain extent.
I can enjoy a good girl!Harry now and again but thank you, thank you, thank you for writing girl!Severus.
Harry as a girl is always described as slight and beautiful and almost as though he looks better as a girl. I can't imagine Severus would look beautiful as a woman and so I love when you described her voice as still being low or that her nose was still huge. How very brave of you and brave for Severus.
(Is it weird that I kinda think of Angelica Huston? In a good way because I think she's beautiful).
Okay, now onto my actual review.
The way you differentiated between Severus and Prudence was excellent. Letting the reader know that Severus viewed himself/herself differently propelled your story forward.
And I've never been one to read het, but your het scene was so very hot. I found myself really getting into it because it was Severus and your Severus was just so very IC.
Also, the little epilogue where there are mentions of love and bottom!Snape. A perfect epilogue for you story.