Those kits are fairly unreliable, so don't put too much stock in the results. (Their sample size is very small, the differences are subtle and difficult to tease out because ultimately all dogs are the same species and most breeds are very "new" in genetic terms and therefore not particularly diverged, and basically they've been proved to have inaccurate results all over the map.)

Chango definitely has Border collie in her -- whatever other breed or breeds might be in the mix genetically she's come down quite strongly on the BC. (You can see examples of different ear sets here, all perfectly acceptable for the breed, and a similar domed forehead on the first dog. That behavior you described, sensitive/neophobic but friendly? Also classic Border collie.)