You're totally right that LA is a superpower! I wrote a book on Linear Algebra that might be of interest to you and your daughter in case y'all want to revisit these topics. In particular it covers a lots of applications.

preview: https://minireference.com/static/excerpts/noBSLA_v2_preview....

concept map: https://minireference.com/static/conceptmaps/linear_algebra_...

intro videos and SymPy notebooks: https://github.com/minireference/noBSLAnotebooks#contents