Sure is. Garfield Minus Garfield reimagines the original Garfield comics in a creative and sometimes humorous way. It's gained a following among comic enthusiasts.
I don't think there is a Garfield comic where Garfield died. Garfield is a popular and long-running comic series, and typically, the main character like Garfield doesn't meet such a fate.
Well, the term 'b93 roofsit for kids' is very ambiguous at the moment. It could potentially be a special project or event with the code 'b93' related to kids sitting on roofs, which might be for fun or some educational purpose. Now, Katie in Katie's story could be a child who has a unique experience during this 'roofsit for kids' activity. For example, she might have overcome a fear while on the roof, or she could have learned something important during this time. But again, this is all speculation without more context.