Hormones take a long time to change the body and it may be a while before they have visible enough effect to be comfortable with their visage and the clothes, how big is their wardrobe? May need time to build it up to where they feel there’s enough clothes for a good rotation. The two year wait may also may give time to be adapt. In transition everything changes and most of us were not socially conditioned as women. There’s so much to learn. But honestly, only they know why. Maybe they’ve read someone else’s journey are trying to mimic, maybe they’re seeing a therapist, maybe they’re just trying to figure it out for themself. The best thing you can do is just be a friend and open to new ideas as they find their way.