She looks good, but like you say the thighs are too thin, I also think the upper arms are too thin in their y direction. You can make your own morphs to beef up the thighs and arms, just use magnets.

Select the left thigh then apply a magnet, from the Object>Properties>Add Element to Deforme, select the Left Buttock and click OK, then add the left shin. X scale the mag, adjust the mag zone untill you get the desired effect, then spawn a morph targt for each affected part. Now do the same for the right leg. I find morphs often work better than scale dials in these situations.