Tislera

The mother of Hera Syndulla was a female Twi'lek who lived on the planet Ryloth during the Clone Wars. She had her daughter, Hera, with freedom fighter Cham Syndulla. During the Battle of Ryloth, Syndulla and her mother fled underground while the Grand Army of the Republic battled the Separatist Droid Army. Seeing the Republic ships fly overhead to liberate Ryloth inspired Hera to become a pilot, and she left Ryloth to pursue that dream, though she had to leave her mother behind to do so.

It is likely she is the sister-in-law of Cham Syndulla, as Hera shares a last name with him, implying that her father is her brother.