"DiD tHeY liE To mE?!" Clearly since she's sitting in front of you alive...

I think he meant it in a "did they lie to me saying they found that leather something I gave you and that you died on an accident instead of telling me they sold you" kind of way.

Oh yes definitely I agree that's what he's asking but also it's obvious that they lied since she just said that they sold her. Maybe it was a rhetorical question out of disbelief , I just found it silly to be put in there.