Yes, the numbers have feelings/personalities for DD as well. Here is a sort of crazy story: this came up recently among the adults on a trip we took with some other families where my DD really hit it off with another kid. The mom told me later that she asked her kids and the same kid DD hit it off with also is a synesthete--and shares many of the same associations with DD. (I guess this is fairly common--that is, A is often red, and so on? So interesting!)

The adult synesthete on our trip also reported that his associations sometimes change.