Why does Half-Life: Alyx's "Alyx Vance" model look like this?

I describe why alyx is in her 50's or something

I put way too much effort into this very informative video!
You better watch it.

Twitter thread of beautiful and horrible HLA Alyx Vance model artworks:
https://twitter.com/Komegatze/status/1458628294878900224?s=20

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Видео Why does Half-Life: Alyx's "Alyx Vance" model look like this? канала Komegatze