I am so slow in reading all the threads that it took me until now until I heard about your meningioma. I had one myself, it was the size of a walnut and was pushing on my optical nerve- so I went to the eye doctor first. I also suffered from dizziness and terrible headaches- but I thought that was all stress. This was in 1994- I had surgery and am just as good as before.
They told me I may have had it for more than 20 years- so it had time tio become as big. I can understand that they want to check now how slow it grows.
Surgery in the brain is always a problem as the brain is so full In my case they didn't want to hurt the optical nerve but depending on where exactly these things sit it could be the hearing nerve or the fazialis as well (the latter would result in a paralysis of the face
Meningiomas can come back but in my case it didn't.
I can remember very well how scary this sounded when I first got the diagnosis and saw my MRI (still have it)- but after all I must say I was lucky- and I know you will be too.
Sending all my best thoughts.