Psylocke was now solidified as a stalwart member of the X-Men and the writer of the other ongoing X-Men title, "Uncanny X-Men," Scott Lobdell, began to have Betsy enter into a romance with a member of the Gold Squad, Warren Worthington III, AKA Archangel. Warren and Betsy both came from wealthy families and they saw each other as kindred spirits. Tragedy struck, however, when Psylocke was once again attacked in the X-Mansion by Sabretooth. This time, however, she did not get away so lucky. An escaped Sabretooth (who had been kept prisoner in the Mansion) gutted Psylocke in "Uncanny X-Men" #328 (by Lobdell, Joe Madureira and Tim Townsend), nearly killing her. Wolverine and Archangel saved her by exposing her to an ancient mythical object known as the Crimson Dawn. It revived Betsy, but gave her a strange red tattoo on her face and new, mysterious abilities.
A short time later, incoming writers Joe Kelly and Stephen T. Seagle planned on killing Psylocke off in a crossover involving the Shadow King called the Psi-War. Instead, in "X-Men" #78 (by Joe Kelly, German Garcia and Art Thibert), Psylocke sacrificed her telepathic powers to trap the Shadow King within her mind.
Psylocke was in limbo for a year or so before Chris Claremont returned to the X-titles and he quickly brought Psylocke back, revealing that she and Jean Grey had somehow traded powers, and now Jean Grey only had telepathic abilities while Betsy had telekinesis. She then used her telekinetic abilities to create a new psychic knife that was now basically a physical blade. Claremont also had Psylocke and Archangel drift apart, with Psylocke ultimately ending up with her new teammate, Neal Shaara, the new Thunderbird. Psylocke and Thunderbird were part of a group of X-Men who went on a special mission to hunt down the mysterious diaries of the powerful precog, Destiny. While with this team of X-Men (who became known as the X-Treme X-Men), Psylocke was killed by a new villain known as Vargas in "X-Treme X-Men" #4 (by Claremont and Salvador Larocca). Originally, Claremont only meant to kill her off temporarily, so that he could bring her back and sort of simplify the character (excise the Crimson Dawn stuff, explain her powers, etc.), but he ran afoul of a temporary freeze at Marvel on bringing characters back from the dead. It would not be for four more years, until Claremont returned to "Uncanny X-Men" alongside Alan Davis (with Mark Farmer on inks) that he and Davis were able to bring Psylocke back to life.
Claremont's third stint on "Uncanny X-Men" turned out to be a short one, as well, and in 2008, he took Psylocke with him as she became a member of the interdimensional superhero group known as the Exiles (her path crossed once again with Sabretooth's, only now he was an alternate universe Sabretooth who was a hero!). She continued with the team as it launched into a new series called "New Exiles," where the cast concentrated on alternate versions of characters that Claremont himself had created (like Psylocke, Kitty Pryde, Rogue and Sabretooth). When that series ended, the implication was that she was still with the Exiles, doing their thing, jumping around the Multiverse making things right.
In "Uncanny X-Men" #508 (by Matt Fraction and Greg Land), however, the evil group the Sisterhood, led by the Red Queen, plucked Psylocke out of the other dimensions and trapped her in her original Betsy Braddock body, which the Sisterhood had revived and put under their control to serve the Sisterhood. In the end, Psylocke broke free of their brainwashing and got her Asian body back (after her original body was destroyed). Psylocke now had her telepathic powers back, as well, and she rejoined the X-Men.
Soon, though, she was most famously a member of the independent group of X-Men operatives known as X-Force (in the pages of "Uncanny X-Force" by Rick Remender and Jerome Opena). Betsy rekindled her romance with Archangel, who was also on the team, along with Wolverine, Deadpool and Fantomex. Betsy, though, soon developed feelings for Fantomex. This was complicated when Archangel was, in effect, possessed by the spirit of Apocalypse and Betsy felt that she had to do whatever she could to protect Warren's soul. Ultimately, Warren was stopped, although he lost all of his memories in the process. Psylocke continued on as a member of X-Force, even later relaunching the group as a new version with Storm and Puck from Alpha Flight and then joining Cable's merged version of X-Force, as she wonders whether she has gotten almost too used to killing. She remained a member of the X-Men throughout all of this, as well, appearing in many different X-Men titles.
Most recently, in the aftermath of the mutant/Inhumans conflict over the effects of the Terrigen Mists, Psylocke has joined Magneto's branch of the X-Men in the pages of "Uncanny X-Men." And, of course, this weekend you can see the live-action version of Psylocke (played by Olivia Munn) as she becomes one of the Horsemen of Apocalypse in "X-Men: Apocalypse."