I would speculate that they might be interested in submitting a patch that compromises the Tor network in some subtle way that only they can exploit, and doing it in her name. Maybe added on to some other big change she submitted, in the hope that nobody will notice it.
Seems the Tor project is using Git for all of their projects, so doing something like that would probably require pwning whatever system she's creating commits on. I will say that putting a bug or something in her keyboard doesn't seem like a terribly efficient way of doing this.
I don't really think that they're trying to break Tor like this. More of a thought experiment - to figure out the likelihood that this is part of an attempt to break Tor, run through the details of exactly how this would be part of such an attempt. It doesn't sound all that practical when you run though how it would work if it was. If they wanted to do it, you'd think they have better ways then a rather sloppy attempt to intercept a laptop keyboard shipment, if that's actually what this was, instead of an ordinary shipment screw-up.
Seems the Tor project is using Git for all of their projects, so doing something like that would probably require pwning whatever system she's creating commits on. I will say that putting a bug or something in her keyboard doesn't seem like a terribly efficient way of doing this.