بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ
"Whatever is in front of you, then maybe it may have the signs of sin in it, but realise that it may have good in it. Perhaps there is 90% bad, but there is 10% good. So expand this 10% and treat it as 50%. Dont say [to such a person] that You are a sinner/transgressor. because this will decrease that 10% of good. Consider the good to be more. Perhaps Allah shall rectify this person at your hands."
You never really know what a person is like. They may seem like a sinner to you but they may actually be a ten times better Muslim.
Note: The speaker is male (lower your gaze) if need be.
Also if you guys have any advice regarding the girl I mention in previous post(s) please share. Recall she is young and does not really seem to understand hijab at all and seems to see it in a negative light.