As Galen took to the rafters and diminished his Force presence, Mara couldn't help but love this. Oh she'd once thrived on tracking people down, on moving exactly the way Galen was currently moving. Which would only make finding him that much easier because she knew how to look for someone who didn't want to be found. But she didn't take the direct approach. Instead, she remained standing where she was, hands hanging loosely at her sides, and she closed her eyes.
She felt around in the Force, looking for a trace of his presence. It was a presence Mara now knew, so she'd know it was him when she found it. She searched carefully, and then after a couple minutes of careful searching she found it. But instead of directly going after him, she allowed him to think she was still looking. Opening her eyes, she moved at a roughly ninety degree angle to where Galen was hiding above her. She leapt into the air, grabbing onto another metal catwalk and swinging herself around and onto it.
Now came the time for her to fully employ some of her old assassin's tricks. Mara slipped into the shadows and ducked down, thankful for her dark clothing so that she blended into the shadows easily. Quickly, she pulled the hair tie off of her wrist and pulled her hair back into a bun, keeping it from both getting in her way and giving her away. At the same time, she concealed herself completely within the Force, though at the same time she did that, she sent a telepathic message to Anakin and Jaina that she was fine and would quickly return herself to the Force so neither would worry about her sudden departure.
Now that she was completely concealed both in the Force and within the shadows, Mara silently made her way along the catwalks working her way over to Galen. She came up behind him, a little smirk playing across her face. She couldn't exactly help it.
"Found you," she murmured into his ear as she leaned in. At which moment she unveiled her presence in the Force again.