Since the height difference is 2, theams that 2 is one fo the side lengths
You can find this using the fact that the triangle's base is starts at roughly the top of Imelda's head.
The other side length is 9, since they are 9 feet apart.
We use the pythagorem theorem to find the hypotenuse a^2+b^2=c^2
4+81=sqrt(85)
Using sin(x)=2 over sqrt(85) we can find the angle of elevation
asin(2/sqrt(85)) = 0.218668945874
This is in radians
We can multiply by 180/pi to turn this into degrees
0.218668945874*((180)/pi) = 12.5288077091548361
We round to the nearest degree and our anwser is 13 degrees of elevation