Granting Vorang to cross-border traffic

Hello, today had the case that I had in a road narrowing in a tunnel that sign 208 – forward in the oncoming traffic – had to grant. I was on the road side of the forang. Before me were 3 vehicles that drove and I am with. I also saw no oncoming traffic. When I was in the tunnel, I saw that there was now oncoming traffic, but that did not stop, but continued to drive slowly. The older woman in her vehicle, rolled always further and then came against the curb Is it now my fault if she has damaged her rim now? Or should she have stopped until I was out of the tunnel. Everyone has been driving slowly, otherwise they can’t help it. Think about it now. Thank you.