One solution would be to agree times when she will switch it off and on, so that if she is a bit late she will have to accept that you will activate the alarm. The other solution is I am afraid find somewhere else to live.

I clearly stated at interview with the prospective lodger that among my rules is -NO BARE FEET AROUND THE HOUSE-.

My lodger has ignored this, said he is a clean person and does not have foot fungus and then went to put on shoes. Later on in the day he did the same no shoes walk and gave me the same argument when I reminded him that this is a shoes ON household. I told him that this is not a beach house, it is my home, and I had stated this rule clearly when he first interviewed. If he does it again, is there a a way to resolve it to my satisfaction short of giving him put-your-walking-shoes-on papers? If I have to tell him to get out, would you know the lawful way to give him that boot in my USA? And, btw, can you do a web site with USA law?

However if nothing has been agreed then as it is your home and you are the landlord, I think your wishes should take priority.

But note also that if your lodger has been using a room as part of her lodger entitlement you cannot suddenly say she can’t use it.

We share the living room, kitchen and bathroom, do we have equal share of these rooms, or us that at my discretion too?

I have just found out that if a lodger has a tv in his/her room, the tv is not covered by the landlord’s tv licence unless the lodger is a relative. I suspect that many people will not know this.