Retouch home after leaving field

[Manny A]

Originally Posted by Insane Blue

What rule backs you up sending her back to her previous base without having an out?

By sending her back you are recognizing that the play was illegal and therefore you have interference and on interference you have an out on the runner closest to home and then you return any other runners.

Speaking FED, I would use rule 8-6-15 and 8-6-18. While -15 speaks of the on-deck batter, it mentions that if no play is obvious when the on-deck batter (and, as a viable extension, any offensive player not involved in base running) interferes, nobody is out and runners return. And -18 requires a runner who has scored or has been retired to interfere with the defense's opportunity to make a play. Whereas example "B" in youngump's scenarios clearly shows that R1 prevented the defense from playing on B2, example "A" does not.