just another thought - someone mentioned miniatures
could you get a few smaller bottles (miniature bottles may be right, but alternatives are probably available, and then you decant the whisky for her into whatever she considers a single shot at a time?
also, while getting milk in 2 litre bottles may be more cost effective, again, how about maybe keeping some single pint bottles and you transferring smaller amounts into each bottle?
and definitely one of those cradle things for the kettle. the consequences of fumbling a kettle with boiling water in it could be more than just messy.