I'm approaching my twelve year anniversary with my wife who was with me through transition. Your partner needing time to reframe and reunderstand you as a person is normal and part of the process. You have to be patient with each other. This is a massive change for her and her life too.
Personally, I suggest focusing on more casual, low stakes feminine existence. This is someone you spend time with. Show her your natural self, your normal mind, your zen, and she will see you for the woman you are. Getting fitted at VS and chastity are both very dramatic and pointed. They don't contain an intimate reflection of your feminine self. Maybe go thrift store shopping for regular clothing together. It's very free form and casual. It allows you to sculpt and show more of who you are. Involve her in the process so she can know you deeply and completely as a woman.