He did a lot more than ‘inappropriately touch through their clothes’.
Well if he did, it is certainly not borne out by the link you provided. I read in vain looking for any detail more than "molested multiple girls as a teenager."
The degree and sort of "molestation" is not mentioned, at least not that I could see.
But this begs for the question. What could he have done without waking up his sisters, who would have presumably objected?
Whatever it was, it seems the family and the "church elders" thought a stern lecture and being sent to a "treatment program" was sufficient to deal with the problem.
Now maybe they think differently from me, but I think if he did any more than touch them or look at them, I wouldn't have been content with letting it go with such a soft response. He would have been put out of the house for starters.
A claim for which no documentation exists.
I read the police report. He touched them above the clothing.