Cheers, thanks.
Indeed, the abbreviations differ so much even between English speaking countries.

Sounds very interesting. Berg Balance has a massive problem with ceiling effect, so I don't think it's appropriate for your patient any longer, but it certainly shows the problem areas.
I (with my magic intercontinental X-Ray vision like diagnostics ) would also do a combination of strength training and functional tasks. So, weight resisted machine based exercises for quads, hamstrings and gastroc to purely strengthen; sit st sit, resisted walking (TheraBand), single leg activities, stairs etc for functional (have you ever tried to get her climb upstairs backwards?). Also, a lot of co-ordination/ balance type exercises on uneven ground (e.g. on balance pad, outside. mini tramp).

As you mentioned fatigue. Has she received fatigue management education? Been assessed by an Occupational Therapist? And had advise on the activity - rest balance, etc.?
Am wondering whether she does too much. How often does she practise - I presume that she has got a home exercise programme.

I don't like the word 'plateau". I think hat sometimes the brain just takes time off to store memory and fine tune skills, just like defragmentation of the computer. And that looks like you make no progress, when in fact you create space for more learning. it's hard to get through this. Maybe she might need a e.g. 6 week break from therapy and then come back for more.

???

Cheers, Fyzzio