She explained that she got 15 because she knew other people would want some.
also it’s all she appears to drink, I haven’t really seen her drink anything else so it wouldn’t be unreasonable.
and as I say lashes aren’t necessary, Harry drinks cans upon cans of coke (way more than 15!)
also do they still spend out for vapes/cigarettes, I know they can’t broadcast it but do they order it as part of the shopping still