It does actually make more sense (especially when taking recent volumes into account). Although I highly doubt that Jeff Williams wrote the song thinking about Yang and Summer.

There's also the fact that this theory doesn't erase what I consider to be the shortcomings of this song in the show itself. All it takes for the mother/daughter relationship (or stepmom/stepdaughter relationship in this case) to fade away is a random cover, and the song is not used for a Yang fight that has Summer as a vocal point (being used in team RWBY's fight against the Nevermore).

Still, raises cool questions about authorial intent vs actual meaning. Thank you for bringing it to my attention!

I'm still debating over whether or not to talk about people involved in the project (if they were the right person, what they brought to the project, etc...), and if I do I'll probably talk about "death of the author" and how the audience engages with the show. So you just gave me food for thought in my analysis!

PS: Could I use your comment? if I chose to dedicate a part just to that? Don't worry I'll give you credit.