What song is this girl singing?
 

A lot of kids sing in this video. But this little boy Aden and young girl Hayley both sing a song that I don’t recognize. I watched the Bratayley from the start and never heard of this song. I tried google and Shazam, and neither know what this song is.

The song I need help with begins 16:40 and ends 17:24, save anyone the trouble not to watch the entire video. Please has anyone ever heard this song before?