Welcome to the forum
@Fi Cole The current situation is hard for everyone with relatives in care homes but updated guidance on visitors being allowed to visit inside care homes is due very soon - within the next few days according to Matt Hancock. I can understand that bringing your mum home will be better for you in terms of not having to speak through a window but as you have said yourself, you will be increasing her risk of infection, plus any change of surroundings can be very stressful for someone with dementia. Also, your mum is currently being looked after by a team of people so you'd need to think very carefully about how you would manage her care on your own, particularly at a time when it may be quite difficult to get a suitable care package put in place. It's worth waiting for a little while longer to see what the updated guidance says before making a decision.