The causation might also run the other way. She might have survived in the field and built up this attitude because she was fortunate early on in her career to have worked with some really good people who were just focused on the science, as opposed to being into trivial stuff like workplace power games. So there might have been some luck involved. She did say that early on she worked with great people.

If that's the cause of her attitude, the point about survivorship bias is still valid... but the reasons for survival are different. The luck of having a good work environment (unusual, some would say) caused the good experience and allowed her to stay in the field with a good attitude.

Edit: I'm not claiming it was definitely the way I say in this particular case, versus the way you said. I'm just saying both possibilities should be considered. Also we should acknowledge that sexism does exist, apart from perceptions of sexism, which admittedly can sometimes be wrong.