Emmaline, it's okay, it's in fact VERY rare to see someone who keeps posting videos after their transition is finished. After a certain point you just run out of things to say, and being trans isn't something that you think about anymore. A vast majority of Youtubers who make their channel specifically to address trans issues will disappear after being full-time and settling in to a point where they're not thinking about being trans anymore.
Most of the trans Youtubers who stick around long after transition are ones who started their channels with other things to talk about also, or ones who are so prolific that they can't imagine not making videos anymore.
For the rest, they feel the need to express themselves and reach out to others while they're transitioning, and then by the time they reach the other side, no matter how popular they are, there's really not much to talk about. You're just living life.
So yeah... I'm sure she's completely fine, thriving, and doing well. It's just rare to see post-transition people stick around.