I’m still surprised by how many people misinterpret Qi’ra’s actions at the end of the movie.
She isn’t betraying Han, she’s protecting him.
She works for Darth Maul, if he ever caught wind of Han he’d kill him without a second thought. Notice in that scene she purposely avoids any mention of Han to Maul.
There is nowhere they could go that they’d be safe. Qi’ra knows this and so she leaves to save his life.
In my mind, she knew she couldn’t run off with Han. It would be his death and hers. She set him up to go, assuring him that she’d follow, but knowing she couldn’t really. She had to clean this situation up as best as she could. I think she hoped she could report in and then disappear, but [Maul] trapped her. He said, ‘Come to Dathomir and we’re going to be working closely together’, and you realise, ‘Oh my god, she’s traded one oppressive boss in for an even scarier dude’. In a way it fuels her ambition and puts her in a position of heightened power, perhaps. Or heightened danger. I thought it was kind of courageous for her.