Our son had a histologically 'benign' tumour for which he had surgery and then proton beam therapy (radiation). 'Benign' is a misleading label for tumours which can recur in the brain. You're never off the hook.
For us, recurrences could cause blindness, untreatable insatiable hunger and obesity, additional hormone deficiencies (on top of what we deal with, which includes daily life saving medication multiple times a day). But once people hear 'benign' I think they believe we are 'lucky' - as though this is some kind of friendly tumour which is treated and dealt with. No such luck.
As it is you're less than a year out from diagnosis, so this is all quite fresh. It is almost 3 years since our son's diagnosis. I still think about it every day. His scans are now every 6 months. But we have had loads of appointments besides and hospital stays besides. I am ok when it's MRI time - but get pretty stressed before the results come back. If he says (at any point, even right after a good scan) that he has a headache, I feel paralysed by fear.
Life gets back to normal and slowly you adjust. I try not to take 'normality' for granted. When we are doing average things I remind myself how lucky we are. I remind myself there are kids in hospital enduring the unimaginable. I hope we are never there again.
Try to take things as they come. People who haven't been through this kind of thing can't really grasp what it's like. They see an apparently healthy kid, and they remember you saying it wasn't 'cancer' and they think you should keep it in perspective or something! Hate to say it, but I really feel that people have a limited capacity for empathy. And they find it a lot more easy to accept the awful things which have happened to you, because frankly it's not them.
Don't lose heart. I hope everything goes well for your daughter's upcoming scan. If you want to PM me please feel free.