Hi sparrow-
As others have said this is very common. Wives often show some initial support for us until some realizations set in:
1) she understands more about you now, 2) her life together with you has changed and will continue to change, 3) this is real and is going to happen and there is no going back, and 4) if she stays she will be in a lesbian relationship, without the same kind of intimate relationship as before.
She is feeling all kinds of emotions, from full blown panic to anger and sadness to distrust of you - the bedrock of her life has cracked and shifted. What she is experiencing are the early steps of grief.
Our wives entered into what they thought was going to be a heterosexual marriage with a male. Finding out that she married a woman has rocked her world, and thats why she's spewing bile at you right now.
Still, a percentage of marriages survive this. Try to get her to go to therapy with you, or to go to her own therapist - she's transitioning too and she needs professional guidance to help her work through this situation. Above all - be knd to her, and talk to her. Whatever you do don't dump more trans stuff on her right now.