Alicia.
I didn't know who or what was in that safehouse by the point the wards went off, and I called for back-up. I ran into your parents at the house. So I blew them an exit and told them to go before anyone else arrived because I knew they'd die otherwise. So they're were shaken, but otherwise they got out and left, and I can guarantee the Death Eaters still have no clue where they are. They haven't found them.