Awww, she looks cute both ways. Tangles come out with a little help, I wet the tangle, then put conditioner on it, I work at it with my fingers to loosen it up, then section, then comb gently. If the dog becomes impatient I give her a flossy on my lap, she knaws at her flossy, while I work on the tangle.
The groomers don't want to spend the time on the tangle so they do the easy thing, shave.