The second year, she quadrupled the number of statues in her front lawn, adding to the original 4 and bringing the total number to 4*4=<<4*4=16>>16 statues.
In the third year, she added another 12 statues, bringing the total number to 16+12=28 statues.
But a hail storm broke 3, reducing the number to 28-3=<<28-3=25>>25 statues.
In the fourth year, she added twice as many new statues as had been broken the year before, adding 2*3=<<2*3=6>>6 statues.
Thus, the addition of these 6 statues brought the total number of statues to 25+6=<<25+6=31>>31 statues.
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