She leaves the Doctor on Earth to start his adventures anew, and begins traveling with Ashildr in a stolen TARDIS with the intention of one day returning to Gallifrey to meet her end, although vowing to "take the long way around".

How did Clara leave Dr Who?

Ultimately, the Doctor had to have his memory of Clara wiped to allow her to return to Trap Street and restore the timeline. But not before Clara, in a stolen TARDIS from Gallifrey, flew off with immortal companion Ashildr, for her own adventures in time and space!

Does Clara ever return to Doctor Who?

Clara rejoins The Doctor with her body in stasis and they escape to the end of the universe together. The Doctor believes that leaving Gallifrey will restart Clara's heart and remove the chronolock, essentially bringing her back to life as if nothing ever happened.