People post mixes here and on Facebook all the time thinking the are a basenji or a mix.. This one is one of the few that really might be! She's probably mixed but I have seen purebred capped basenjis and ones with heavy ticking. A dna test would be interesting!
Her ears look a bit more rat terrier than basenji and the breeds have such a similar look that they get mistaken for each other a lot. I have a friend with a red/white standard rat terrier (show dog) who had a docked tail and is constantly mistaken for a basenji.