I get your point. At the end of june Alena, Alina, Anna and Alexandra participated in a series of skating shows in Japan. I doubt that her team would let her go if they knew her injury was not healed, considering she jumped a lot (also showed a good form there).
Last week she posted about her music change - so if there are legimate rumours about an injury it must be something quite recent, during practice. I also don't see how an injury would lead to her changing her new SP into a LP.
If it's nothing official I would dismiss the rumours. On twitter I've read weeks ago stupid things in english (don't know if they are russians) - that her team "hates" her because she is not jumping quads

I tried to reason with one by pointing that Alina doesn't jump quads or 3A and she's not "hated" by the team. It was in vain.
Her LP music is powerfull, modern and I don't see how the judges won't like it. Those songs "Eyes On Fire" and "Supermassive Black Hole" were not created especially for Twilight. Alena it's not the first one to skate to Muse

If the choreo is on point and modern I see an amazing vehicle for Alena's senior debut. From my perspective, Daniil does better the "image" sort of choreography than the "story-telling" one. I actually welcome the fact that Alena will not have another lyrical program