Reflecting back might sometimes be useful, but your particular phrasing came across as condemnation. The implication, to my reading, was judgemental: you though

Reflecting back might sometimes be useful, but your particular phrasing came across as condemnation. The implication, to my reading, was judgemental: you thought they were appropriately feeling guilty but seeking outside encouragement to reject that feeling. If you're going to try your hand at encouraging self reflection, are more encouraging tone may be useful. Otherwise you risk wounding someone who, in this case, is already struggling with something.