Some heelers have some black and tan in them (comes from the Kelpie in their ancestry), and the head and body type looks right.
I'm not saying I haven't met a heeler that is a few bricks short, but the one we had was fiercely independent and stubborn as the day is long, which looks a lot like stupid if you are used to retrievers who just want to make you happy.
If we'd give him a job (herd the other dog, fetch the ball for all hours, chase the bunnies and squirrels out of the yard, etc.) he'd be happy as anything. It's not that they don't learn, it's more that they want a justification that makes sense to them about why whatever needs to be done, and then given a little free rein in how it gets done. And there's enough of a jerk in them that "chase that other critter" is a pretty good reason.
Remember, these are heel dogs, they were bred to bite the heels of stubborn cows until they'd move, out-stubborn them in the process, and do whatever it takes to get them where they need to go...not like a border collie who will eye down a sheep or a goat until it decides it is psychologically overmatched and goes the other way. Completely different thought process in how the dog is used and how the dog approaches the work.
Though if you do teach her fetch, use TWO balls, if you use just one she will hold onto it until she catches her breath and you'll not be able to do anything else all day. With two balls in motion, you have a chance of getting her exhausted for a spell.
That's her ! She fetches with no issues, never trained, she just does it and I guess luckily she gives me the ball with some effort to get it. She loves tug o war, again never taught she just does it. She will bring the rope and put it in my lap and nudge me until I take the other end then game on...whether Im ready or not, shes playing ! Outside she will chase moles or gophers, and she will dig to get them ( trying to put a stop to the digging, little divots everywhere sheesh ! But as far as fetch, she will wear my arm out quick, so I try to make it where she has to work to get the ball ( throwing down hills, behind bushes..ect.. ) but she never seems to tire LOL. The only real issue with her is my son, He is super small (9yo wearing 5yo clothes still ) so she seems to bully him kinda like a jealousy thing, she used to nip him ( and anyone else for that matter ) and training classes weren't working but the shock collar stopped that in its track the first day but she still pushes him around , blocks where he is going or squeezes between him and wherever he goes.... Im just glad the nipping stopped. She does have the colored hair tips around the neck that is like the Heeler characteristics in their coats but just odd she looks Rottie / Shephard in the markings and color