"Hey, you think something as trivial as age takes away my big brother powers? No way. Those are for life kiddo." He nudged her with an elbow, grinning.
"But you are an adult, as much as I hate to admit it. So, whatever you want to do, I'm behind you." Or in front of her, even if she didn't necessarily like it. Parvati had hurt them all enough, she wasn't going to get a second chance at his siblings.
"But I know what you mean. About it being hard. This isn't Mum, not the way we knew her, and she seems a lot more human now. And a lot less drunk." He raised an eyebrow. "So that has to count for something, right?"