Looking for some help, please, finding a novel I read in the '90s (I think mid-'90s). I have the vaguest memories of a hot pink border on the cover.
The plot involved a teenage female protagonist going out on a FTL flight (I think with family?), and after some disaster (very vague memories, but I think they discovered hostile aliens, or at least dangerous alien tech), she essentially supercharges the FTL to take her to the end of the universe. When the universe ends, it immediately big bangs again and history plays out exactly as before. Essentially because a cosmic-scale time loop of tragedy.
One of the first scenes (if this helps) is the protagonist as a teen being approached by a woman who looks like an older, sadder version of herself (FORESHADOWING!!) and having a feeling that the woman wanted to hurt her, but just wishing her well, then tearing up behind sunglasses and leaving.
Been trying to find it for years with no joy. Any help would be amazing, thanks.