2: Sibling rivalry's beginning - worry about it (7)
5: Analyze rotten pears (5)
6: Capture ten heading north (3)
8: Healer making solemn statement about upcoming writers (9)
10: Going after the final piece of puzzle for a very long time (3)
12: White or brown powder sounds like pink (5)
13: Food provider for tom and two queens (7)