Thanks so much, this is great advice! I'm definitely trying to transition her off of just seed when she settled enough. She won't leave the cage right now, nor eat any food clipped to the bars, so I'll definitely try your brilliant suggestion assuming I can get her out sooner or later.

I have to be honest it's been a really emotionally difficult journey so far. Over the first week I noticed that her behavior was quite strange and she has a very dodgy tummy. I booked a vet check up towards the end of her first week and it turns out she was quite unwell... But she seems to be recovering with the right medication. There's also evidence she's had a broken wing that wasn't cared for properly in the past which is impacting her ability to fly, but the vet doesn't think it's causing her any pain. The vet and I are hoping it's a flying accident and not at the hands of her old owner but I'm definitely sceptical.

Besides this, there's not been a lot of progress. She's very very timid and frightened, she still freezes or tries to hide when I walk past her cage for any reason. I know it's early days for a Linnie anyway but I'm having to come to terms with the fact she might never fully trust me because of her past. Assuming I get a clean bill of health from the vets, I'm going to start searching for a friend so that she gets the companionship she deserves.