We Have Already Seen...
...attending Aunt May's Christmas party, Peter Parker discovers one of her friends, Arthur Chekov, in despair because his granddaughter, Bette didn't show up, and he's worried about her since he's her only surviving relative.
Peter attempts to console him when the webslinger's Spider-Sense goes off!
Excusing himself from the party, Peter goes to the darkened backyard to find...The Watcher...who says nothing, but hands him a glowing gem showing an image...of Chekov's grandaughter, Bette!
Taking this as a portent, Peter, now in costume, attempts to track down Bette, but can't!
Ol' Web-Head doen;t know how to proceed, when none other than the Star-Spangled Avenger himself, returing home via the rooftoops, finds him and offers to help...
Written by JM DeMatteis, penciled by Kerry Gamill, and inked by Mike Esposito, this never-reprinted Yuletide tale from Marvel Team-Up #127 (1983) offers a bit of insight into why the enigmatic Watcher doesn't just observe, but violates his race's version of the non-interference Prime Directive time and again, sometimes during Earth-shaking events, sometimes in matters affecting those who others might consider "unimportant".