Wiki: 

"The modern form of the problem was first introduced by [Philippa Foot](https://en.m.wikipedia.org/wiki/Philippa_Foot) in 1967,[[1]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-Philippa_Foot_1978-1) but also extensively analysed by [Judith Thomson](https://en.m.wikipedia.org/wiki/Judith_Thomson),[[2]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-2)[[3]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-Judith_Jarvis_Thomson_1985-3)[Frances Kamm](https://en.m.wikipedia.org/wiki/Frances_Kamm),[[4]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-4) and [Peter Unger](https://en.m.wikipedia.org/wiki/Peter_Unger).[[5]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-5) However an earlier version, in which the one person to be sacrificed on the track was the [switchman](https://en.m.wikipedia.org/wiki/Switchman)'s child, was part of a moral questionnaire given to undergraduates at the [University of Wisconsin](https://en.m.wikipedia.org/wiki/University_of_Wisconsin) in 1905,[[6]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-6)[[7]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-7) and the German legal scholar [Hans Welzel](https://en.m.wikipedia.org/w/index.php?title=Hans_Welzel&amp;action=edit&amp;redlink=1) [[de](https://de.wikipedia.org/wiki/Hans_Welzel)]discussed a similar problem in 1951.[[8]](https://en.m.wikipedia.org/wiki/Trolley_problem#cite_note-8) In addition, a similar problem involving whether it is ethical to deflect a projectile from a larger crowd toward a smaller one, was discussed by [Avrohom Yeshaya Karelitz](https://en.m.wikipedia.org/wiki/Avrohom_Yeshaya_Karelitz) in his commentary on the [Talmud](https://en.m.wikipedia.org/wiki/Talmud), written and published well before his death in 1953"

So, does it really count as her inventing it? If so, she invented by by omitting the part where the single person is the switch operators child.

https://imgur.com/a/UD0vcSA