In early drafts, Isabella was much more benign and curious. This was changed in part due to the producers feeling the resulting story was dull, and also because they felt it was too similar to The Child (1988).
Noley Thornton (Clara Sutter) would appear two years later as Taya in the Star Trek: Deep Space Nine episode Shadowplay (1994).
This provides the only view of a toilet in Star Trek.
Ensign Sutter is the first Trek role of Jeff Allin who later plays Gedrin in Dragon's Teeth (1999) and Ralph Furlong in the video game Star Trek: Borg (1996).