Quote
When owing to an irregularity no result can be obtained [see also C1(d)] the Director awards an artificial adjusted score according to responsibility for the irregularity: average minus (at most 40% of the available matchpoints in pairs) to a contestant directly at fault, average (50% in pairs) to a contestant only partly at fault, and average plus (at least 60% in pairs) to a contestant in no way at fault.
While, if anyone, the delayed player was "responsible" for being late, it appears to me that it was not her "fault". NBO (Germany) regulations suggest that average minus should be awarded for the pair as being not at the table, but the terms "responsibility" or "fault" are not referred to in the regulation, and reasons for the pair being not at the table are not considered by the regulation. What I know from the practice at other tourneys is that there are no penalties for players arriving late due to delayed trains.