I noticed the music coming quite loud from the rear speakers, but in my case not to the extent that I felt the need to turn down the rears. It isn't front centric but didn't feel unbalanced to me. I also prefer her first album, it's really great (but only stereo) and quite different. This second album is more complex and nuanced, and may become a more rewarding listen in the long term. I haven't listened to it enough yet, I think.
Wow, someone who knows her! Haha. Haven't listened to Purson in ages, but I do remember there was a song from that album that I loved: "The Tempest and the Tide". And the song "Wool", from their first EP, which I also love, might be her favourite, as I think it's the only Purson song she's still playing live nowadays. Sounds like proto-prog metal or something, with some incredibly cool interaction between the guitar riffs and the mellotron.
I remember discovering those around the time Opeth's Sorceress was released and thinking "I wish those Purson songs were the new Opeth songs".
I'm still surprised Rosalie hasn't become huge after all these years. She's a talented songwriter, multi-instrumentalist, singer, clearly a natural born performer... she even has the looks and oozes rock star charisma, but somehow she's still playing to 50 people in small venues, even in big cities.