She posted a video about how she was having a really hard time with some things but she couldn't discuss it. It was obviously this.
I personally don't care about this. But I do find it ironic that Spencer posted a big video about grey area stuff and TUEs a few weeks before this test. Talk about throwing stones from a glass house!
I doubt this has any real performance benefits. And it's pretty obvious from the times she ran before this (Gate River Run) that she wasn't doping.
Though this does make me wonder about whether other semi-elite running YouTubers get tested. On the one hand I don't see the point in doping if you're chasing a sub 3 marathon. On the other hand, if they feel pressure to outdo themselves and run faster to grow their channel, I can see the allure of doping.