First thing to sort, while she's still in hospital, is a "re-ablement package" - up to 6 weeks of carers, funded by NHS, whose job is to get her back on her feet and able to look after herself. Ask to talk to the hospital Discharge Team. Remember in your dealings with them, their focus is to free-up hospital beds, so be very firm in your advocacy for you Mum.
You can have carers in whether or not you're in sheltered accommodation. So you might want to scrutinise carefully any sheltered accommodation that is available. Firstly, there's very little sheltered accommodation available for rent, most of it you have to buy. Secondly, it seems expensive for what it is - a flat in a private sheltered accommodation block isn't that different in price from getting a fairly standard small house, at least in our area. On top of that there is a weekly or monthly charge for services (even if you don't use them); and finally there are services whose costs aren't included, so you have to pay extra. Thirdly, once the flat is no longer needed, it may prove difficult to sell. So do your research very carefully!
Assuming your mother is moving into a standard house (not because I'm advising this, but it's what I know with my father) - you ask for an assessment of needs from social services. They decide what she needs, then assess her financial means, and ask for a financial contribution (up to and including the whole cost). The value of the home isn't taken into account in the financial assessment, but savings are.
It's worth doing this step, because it also gives access to advice, and things like grab handles, pressure cushions, zimmer frames, "perching stools" are on loan, and come at no cost. You may also have a meals on wheels service in your area (40% of councils still have these) which will deliver a hot meal daily at lunch time (with choice of menu) and optionally a sandwich pack for tea. Or you can buy in re-heatable meals, there are several specialist suppliers besides the obvious supermarkets.
As far as the house itself is concerned, make sure that, if needed in the future, you can have bed, kitchen, and shower/toilet all on the same floor, preferably ground floor. So make sure that if there isn't already a ground floor wet room, you can put one in.
If she can still get out and about, it's good to be near a bus stop.
If you go for a stairlift, consider a reconditioned one. Most stairlifts aren't used for more than a couple of years, so a reconditioned one is a good option, and a lot cheaper.
There's a lot of useful technology about. LAs usually operate a alarm call service - elderly person wears a pendant, if they fall, they press the button, call centre talk to them, find out what's wrong ... but it still requires you to be on call to help them get up. I haven't found any service willing to pick up fallen elderly - except 999, for whom it is a low priority, so expect a wait of many hours.
You can get devices that check for movement - sudden movement as in a fall or collapse, whether someone hasn't moved for many hours, or whetehr someone is about to head out of the house at 2am. Movement detectors near front door can remind person to lock up as they go out. Security cameras, so you can see what's happening, Look into the whole "internet of things" for what would be useful in your case, eg remote turning on of central heating.
If you have carers coming in, easiest is to have a key safe, so carers can type in code, release front door key, and let themselves in.
If medicines are a problem, they can be delivered already sorted into daily doses (originally in a dose-ette box, now pronounced and often spelt dosset). Talk to the pharmacy.
If you haven't already, get Power of Attorney for Financial affairs, and for Health and Welfare. Has to be done while she still has capacity. You can't use the H&W one while she has capacity, but the Financial one can be set up so that you can use it - Dad manages his daily bank account, and I manage his savings account as his attorney. And if she's OK about it, write a letter for her GP (also dentist and optician), signed by her, saying they can talk about her medical affairs with you.
Finally - about yourself. You have no idea how difficult this can get - it's the relentless, on-call 24/7 aspect, you never have any down time to completely relax. So you need to protect yourself and your own sanity, else you'll be in no state to help anyone else, Save yourself for the things that only you can do - help with decision making, researching options, emotional support, and just being a loving daughter. Everything else can be outsourced. So don't say "Oh, I can easily push a lawnmower round her lawn once a week, and it won't take me long to mop the kitchen floor and run the vacuum cleaner around" - it all adds up. Get a cleaner and a gardener. And a hairdresser who will visit the house so you don't have to take her. And so on.
Your aim is to postpone as long as possible the time when a visit to your Mum is simply a chore.