Why can't see the collab playlist?

[Unclefhu]

I've collab a playlist from my Macbook Air, but how come my girlfriend can't see the playlist from her Spotify?

I have a premium plan, but she doesn't.

[matfalcon]

https://open.spotify.com/user/louiscapetxxvi/playlist/6OnEL6xrAGhGnMufox2rBF