This may help explain Grimes/Musk to the unawares, an excerpt from a 2010 documentary on Grimes (then a student at McGill), starting at 0:50:
"I really think like the continuation of space exploration is like a really important thing. I think it should be like much more focused on in schools.
....
Would you like to go to space?
Oh, yes! I think I would. I mean the ideal [that I look as like impossible?] would be to work for NASA.
[shows off picture of Sally Ride taped up in her apartment]"
https://www.youtube.com/watch?v=UJNOJZrwHMw