Welcome to TP. I'm sorry you have a reason to be here - dementia is a devastating disease for the sufferer and all who love that person. But once you have the diagnosis, TP is the best place to come.
We need to know a bit about your Mum so that our advice can suit her and her circumstances. As you will soon discover, every sufferer is different. They have some aspects in common but there are SO many variations.
For example: sheltered housing can be a great option for some - but not for others.
Whatever advice you get here is only that - advice. It is always YOUR choice what you do, and TPers will support your rights in that way. If we suggest something you don't like, or don't want to do, there is no problem in telling us so (politely!!
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But I think you, like so many of us before you, will find this site gives you great support, a chance to off-load your worries, good and sensible suggestions, practical and useful advice - and a place to come to "let off steam"!