i'm not a lawyer but i'm pretty sure the definition of rape is forced insertion of anything so, when they examined her for semen did they examine her for vaginal/anal injuries? if they didn't, and this guy's lawyer didn't pick that up and do anything with it, then hire him a better lawyer
nope. fat is fat - regardless of sex its unhealthy - carry extra weight around long enough and you will have health problems you wouldn't have if you didn't