I also saw that interview, then out of curiosity I tried to find any evidence of this. There are some fan sites with ostensibly original X-Files scripts out there[1]. Looking through some written by Carter[2], I wonder if this is apocryphal, or if he was messing with her a bit.

[1]: https://www.boggsfiles.com/x-files-scripts-by-season/season-... [2]: https://drive.google.com/file/d/1BQbfRmeq3FsajjYcEuqDHv0kf2B...

Wow, thanks for doing this digging. In the interview Gillian recounts Chris Carter saying "Look, no widows."

Maybe this was not the rule, but something that he had always strived for, so he felt the need to call it out as something cool?