Re: time to hire up a coach?
I agree about the coach.
I'm not sure to agree about the fitness. She's awkward in her movement (she has always been anyway, but currently more than ever) but IMO the awkwardness is due more to psychological issues than physical: some stress, some struggle to find back the optimal mindset to cope with the pressure and the fear about DF's. In tennis, that stuff kinda "cut your legs", hence the dubious movement.
She's erratic within the match. Some flashes of brilliance (for instance she made an overhead smash that was absolutely gorgeous and very difficult, the kind of shot she used to suck at) alternating with absolutely worthless tennis.