Hi @Kiwimama and welcome to the forum. So sorry to hear of your mum’s stroke, this is not the easiest time of you being on the outside looking in. I’ll be brutally honest with you here, it takes years and then some! But it can and can get a whole lot better over that time!
It’s just going to take a lot of patience from all of you, recovery requires a lot of rehabilitation and cannot be rushed no matter how hard we try to speed it up. We’ve all had to learn that lesson the hard way here. Fortunately your mum has a loving and supportive family to take this journey with her and that will be a boon for her 
I had swallowing issues and little appetite too, everything just tasted like carboard and I lost nearly 3stone I couldn’t afford to lose. She will be losing weight, muscle mass is shrinking due to her immobility and that lose will make her feel weaker and tire her out quicker. Hence the importance for getting her to eat well. Particularly high proteins because that is food for the brain, its nectar, vitally important to the brain’s recovery. So highly recommend @Mrs5K suggestion of using additional supplements in her diet for the first few months.
I coughed a spluttered a lot taking in food and drinks but just battled my own way through it in small bites and sips. Being in lockdown at the time and non-verbal as a result of the stroke it was tricky to get such issues across to anyone that could have helped at the time. But I was always well aware of the importance of eating healthy and what I needed to get better, or rather to avoid any other health issues or ailments as a result. And from what you say about your mum’s healthy regime I’d imagine she will soon start working harder to eat, it’s only been a week yet. And she may very well have misunderstood what the dietician was saying. And besides, we all know how vile hospital food is, I couldn’t wait to get home to get something descent inside me…even though it still tasted like carboard 
I think all that side of things gradually righted itself over the first year post stroke though. Patience, Persistence and Perseverance are the keys to all things in post stroke recovery 
There are no miracles or quick fixes to strokes! The first 6mths is all about the healing/repair and mop up in the brain after the stroke, assessing the extent of the damage and getting what it can up and running again. And aside from the visible physical disabilities, all the things such as sensation or feeling, distorted taste and smell, struggle with balance, vision, speech, memory, attention span, emotion, etc, etc, etc, they can all be impacted in some way too. So it could take some weeks to even realise she even has any of those issues.
Just because you don’t see it, doesn’t mean she hasn’t done the equivalent of a full day’s hard graft. Because her brain has! It’s currently working double time without a break because it still has to maintain all current functionality too. It’s really working phenomenally hard even as she sleeps, time has no meaning for it at the moment. She could find she’s asleep most of the day and find herself awake all night. And that’s what the fatigue is about. And she will progress at her own pace set by her brain.
So even though rehabilitation is of vital importance from day one, it’s not going to be to the level or extent you might imagine. This can be measured in minutes, an hour at the most, because everything is quickly draining. Everything is rehabilitation/physio/therapy for her, just waking up and taking her meds can be draining, eating a meal, just laying there talking, it’s all a major exercise for her just now.
Nothing is linear and every day will be different and it doesn’t stop at the 6mth mark, it just slows down. It can be a bit of a rollercoaster ride at times, 2 steps forward, 1 step back. But progress is always being made, it’s just some of it you won’t necessarily notice because it’s all going on on the inside. And it takes years, not months, to recover what can be recovered.
So for the moment the brain is only running the most vital of emergency services while it does that mop up and repair. It just can’t cope well with lots of activity, people, talking, crowds, loud noise, for at least the next 6mths. I’m afraid it’s going to be a very simple, quiet life for the time being, depending on the extent of her stroke damage. All activities should be kept to minimum, small bites. Even just being a passenger is a car is fatiguing; that’s because just looking out the window the brain is taking in a lot of data to process.
I won’t lie, her old self and old life are gone! But this is a new chapter in the making. She had a stroke and lived to tell the tale and she has the rest of her life to live and celebrate
I’m 63yrs and 5yrs post stroke. I can drive, I can drive people round the bend 
I attend fitness classes every day, I can garden, I can party (as exhausting as it can be), cook, clean and do pretty much everything I want to do. But I do have to pace myself! I can still get fatigued but I believe I manage it very well. And I can rabbit on and on here while I figure out how to stop long enough to give someone else a turn 
So I think I’ll shut up now 
Lorraine
) I think it also helped retraining the swallow reflex but does make water taste a bit odd.
If you met me you would not even realise I had had a stoke. You cannot see my issues.