Aiming to destroy the Sentinel control center located in the Baxter Building, Rachel and her compatriots carried on. She also informed them that, even if Kate succeeded in the past, it might not change their present, but instead create an alternate timeline. While Wolverine, Storm, and Colossus went inside the building, Summers continued to keep Pryde safe. And though she could not see Logan and Ororo die at the hands of Sentinels or Piotr's ensuing rage, she could feel it all.
In NEW MUTANTS (1983) #18, Rachel made her first appearance in the present and made her way to the X-Mansion. After remembering the moment the government attacked that place and killed Professor X in her own timeline, she was understandably shaken. That feeling intensified when she knocked on the door and was greeted by Illyana Rasputin! Though this time period was supposed to be before she was even born, but she remembered Illyana as the exact same age! Freaked out, Rachel ran off and next appeared in UNCANNY X-MEN #184-185 where she wondered if she'd time traveled to the right past!
Though weakened by the trip through space-time, Rachel's raw power still made her the perfect mark for the energy vampire Selene. When the villain attacked, Summers ran off and wound up in Nick Damiano's night club. He took her home and gave her shelter. For his trouble, he got completely drained by Selene, leading to an apartment-destroying battle between her and Rachel. The latter reached out to Professor X who traveled with Nightcrawler, Colossus, Rogue, and Storm to track down the two powerful mutant signatures. They chased Selene away and Rachel broke down, convinced she'd made her way to the wrong reality.