Disclaimer: Harry Potter belongs to JK Rowling
Lyra had been home for a week before she remembered the Dursleys. They had been away from Privet Drive for almost a year, and although both Hestia and Dedalus were guarding them, Lyra knew that they wouldn't be allowed home until their safety was guaranteed.
Although the job could fall to any of the Order, it was in an effort to deter Sirius and Remus from confronting her relatives that caused Lyra to stand up and offer herself. Not only did she not want Sirius and Remus to have the opportunity to be in contact with her relatives, she also didn't want to inflict the family on any other person who had dedicated the last few years to protecting her.
And so, in gratitude to their efforts, she shouldered the job herself.
It wasn't until the day before she was due to fetch them that Charlie offered to join her. It was the evening meal, Remus and Tonks were eating at their own home and so Charlie had joined Sirius and Lyra at Grimmauld Place when Charlie paused his eating.
"Do you.. Want company tomorrow Ly?" He asked cautiously. Sirius sent him a grateful glance as he spooned spaghetti in to his mouth, while Lyra looked up at him in shock.
"I didn't think you'd want to.. That's why I'm doing it, so nobody else has to. I've dealt with them for years, I didn't want anyone else to suffer. But if you want to.."
Here, she blushed, but continued,
"I'd be happy for you to come with me." Sirius and Charlie both smiled, as Sirius didn't want Lyra to confront her childhood bullies alone, while Charlie was grateful for the chance to spend some more time with his girlfriend as well as defending her against her uncle and cousin.
The next morning, when Charlie arrived, Sirius thanked him gratefully before Lyra joined the two men downstairs. He watched the pair as they left the house, before he went to join the Order in aiding McGonagall to rebuild Hogwarts.
Once Charlie apparated with Lyra beside him, they emerged in a small village in Ireland, with green rolling hills surrounding the few cottages they were near. As the couple walked down the lane, they sensed rather than saw the magic wards that layered the cottage. They had both learnt a lot since they had been separated at Bill and Fleur's wedding and while Charlie checked on both the presence of Dark Magic and the number of people within, Lyra sent a Patronus inside to whoever was present.
"There are five people within, and there's no trace of curses so it should be safe, Ly" Charlie stated, and as the cottage door was thrown open Lyra took a deep breath to prepare herself for confronting her uncle.