I think I see tire cord on that passenger-side front tire. Looks like tread separation. Maybe she smacked the curb with the oil pan and bounced off the tire?
Yes, I also tend to test brake work rather firmly in the driveway several times first before a road test. And the first road test(s) include plenty of space to use the emergency brakes if necessary.
MB girls should date only competant Mercedes DIYers. But I guess that would require a system of polygamy.
Ken300D