You could have calculated it directly from this..
S = 1/2 A T**2   A = 32.2 ft/sec/sec  (9.8 m/sec/sec)
S is distance..    1/2 x  32  x  (3.8)**2   
Since I am lazy, I will call it 4 seconds...
1/2 x  32   x    4**2  =   16 * 16 = 256 feet high, so your 230 is probably right.  You just did it the hard way.
Of course, this assumes she didn't slow down due to wind resistance....
Also, V = AT   so she was moving at  V = 32 * 4 = 128 feet per second, or 87 mph, when she hit the ground.  
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