You can't really just decide on a saddle you want to buy because someone else says it's good. It has to fit the rider AND the horse. Tell your friend to have a ride in a few different saddles to see what she finds most comfortable before she blows her money on something that isn't really suitable.
Also, some saddles just will NOT fit some horses, no matter how much adjusting you do to them, so make sure you get something that sits well (doesn't have to be perfect because you can alter it, but well so that it does not slide onto the horses shoulders, back or slip side to side etc.)