Stacking labels in ggplot

I am building empirical ROC curves and am stuck with a few that do not look very sensible. I am using geom_text_repel but they are simply to close to each other. I was wondering if someone can offer some sensible solution.

The data:

    structure(list(sens = c(0, 0.2, 0.2, 0.4, 0.4, 0.4, 0.4, 0.4, 
0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.5, 0.5, 0.5, 0.7, 0.7, 1), one_min_spec = c(0, 
0, 0, 0.021, 0.021, 0.021, 0.041, 0.041, 0.041, 0.041, 0.041, 
0.041, 0.041, 0.041, 0.062, 0.062, 0.108, 0.17, 0.183, 1), cut_point = c(NA, 
18L, 17L, 16L, 15L, 14L, 13L, 12L, 11L, 10L, 9L, 8L, 7L, 6L, 
5L, 4L, 3L, 2L, 1L, NA)), row.names = c(1L, 12156L, 11470L, 10784L, 
10098L, 9412L, 8726L, 8040L, 7354L, 6668L, 5982L, 5296L, 4610L, 
3924L, 3238L, 2552L, 1866L, 1180L, 494L, 20L), class = "data.frame")

And the plotting code:

ggplot(df, aes(one_min_spec, sens, label = cut_point)) +
  geom_abline(
    intercept = 0,
    slope = 1,
    color = "black",
    linetype = "dashed"
  ) +
  geom_path(colour = "gray") +
  geom_point(colour = "black") +
  geom_text_repel(size = 4) +
  scale_y_continuous(limits = c(0, 1),
                     expand = c(0, 0)) +
  scale_x_continuous(limits = c(0, 1),
                     expand = c(0, 0)) +
  theme(text = element_text(size = 14))  

I was thinking maybe to try to create a single label for each point, instead of a number of them if they are sharing the same point in ROC space. I.e. in this case it would be a single label 6-13 instead all cut points having one. Not really sure how to do it and does it make sense?