Mystery Maple needs help
I have a few mystery maples in my yard, but I'll start with this one.
Before my neighbor left the US for China, she gave me this japanese maple in pot. It seems to be awfully thin and it's foliage isn't that full. I received towards the end of last year when it should have been completely full. The leave was red when I received it and they are leafing out now. What can I do to help this plant along. Should I repot it? Change it's soil? Give it some food? Any suggestions will be helpful. And should youcome up with a name I can give it, I'll research the attributes and add it to my list. See picture attached.
Here is a link that might be useful: