Awesome...
Indeed, she is. Despite going against all cultural norms and the criticism that always follows, these girls enlarging their breasts with expanders always look incredibly happy. As Foxy recently replied "having boobs my size makes some things trickier and other things impossible, but the pluses far outweigh the minuses for me," which I believe summarizes the feelings of all of these girls. The some things trickier and other things impossible is directly dependent upon size and if we remember, was inspiration for Beshine to keep expanding because she found these things exciting to experience daily, so much so that she has made numerous videos addressing (or showing off) how her boobs change the ways she does virtually everything. Each girl has to choose her own size that she is comfortable with and able to function as necessary. I suspect that Brittany may have wanted to go considerably larger, however, physical limitations, her 5' height, and parental responsibilities were probably limiting factors, but still, 4000cc at just 5' tall is probably like a 5'6" girl having 6k or maybe 7k.