Three Sisters, by David Macinnis Gill

Three girls and their father climb a dormant volcano in the Cascades to release the ashes of their mother.  The girls are bickering and fighting, and their father, wracked by grief, is struggling to keep himself together.  The family is a wreck and that's before the mountain they are climbing starts becoming seismically active.  As strange smells, dying animals, and tremors start to appear -- all clues that something is seriously amiss -- the children and their Dad remain locked in their familial drama.  By the time they realize that they are in serious trouble, it is almost too late.

While the snarking between the girls had a realistic quality to it, it was overdone and carried on for too long.  When the girls are refusing to talk to each as volcanic ask is falling on them and their father is bleeding out, one just started to wonder how they ever became so bratty?  Quarrels can be cute but here it became distracting and annoying.

Far more enjoyable was how resourceful the girls are.  The youngest is a first aid whiz, which comes in awfully handy when the injuries start to happen.  Another is able to lead, even when the father basically shuts down inside his surprisingly immature mind.  And the third is a scientific wunderkind, able to carefully narrate what is happening around them with a surreal knowledge of all things geologic.  It wasn't terribly realistic either, but dramatically satisfying and necessary for such a complex situation to have someone be able to explain what was happening and what could happen next.

The pace is fast and unrelenting as one disaster after another befalls the girls and their father.  That keeps the pages turning and allowed me to blow past the annoying bits, resulting in a surprisingly rewarding read in the end.