There's actually a school of thought, how, that fire extinguishers can be a bad thing unless you've been trained in them (I have but it's expensive) because incorrect use of some types can lead to personal damage; and they can also cause complacency/delay in calling in the professionals/ delay in getting out etc etc.
When they came to my house, the fire brigade weren't in the least concerned about extinguishers but they were exercised about working smoke and CO alarms and their correct placement. I think their attitude was more of a 'Get yourself as safe as you can and then contact us to deal with it'.
I'd ensure that you have a way of keeping yourself and family as safe as possible and maybe a charged mobile with you at night if you don't have a completely secure and easily accessible phone line. I think personal safety is your first priority.