Tried Shazaming it forever but gives various suggestions - if its not saying can't be found - and none of them is the one instrumental song that is playing when Regina and her family have a BBQ at the lake.
(The mermaid Kiss - Thirteen isnt the one even though Shazam suggested it)
I believe it's Composed and Conducted by Trevor Jones. I really liked it as well. Very haunting. I found this on youtube https://www.youtube.com/watch?v=f386c4HZgek I guess it's bits and pieces of the score.
Into the light by Trevor Jones
7:00 minutes long
Beyond the shadow of death by Trevor Jones
10:26 minutes long
If you cant find the songs anywhere to download I am sure you could find a copy of the Hideaway movie soundtrack on ebay for a few dollars. I know it has both those songs on it. Full versions and not bits and pieces. Tracks 12 and 13.