I think this has a complete story or at least the highlights of a storyform at a low resolution.
OS: Bring Zack back. The story ends when the nursing home employee either bring back the escapee or fails to do so.
MC: Tyler (steadfast). MC TL: Having no future/job; a better future in Jupiter.
IC: Eleanor (change). IC TL: Babying Zack. Fearing for Zack’s safety in the real world. A fixed attitude about Zack’s limitations. Change: She changes from babying Zack to adopting Tyler’s perspective and going to Florida.
RS: Becoming a family.
OS/change character (and, because it’s a failure, RS) problem & solution: consider & reconsider (?)