To be honest, if my Son had told me to duck Off, Menopause or no menopause I would've kicked his arse too. Girls can be so vicious, it's probably best she stays away for now and when she comes home, some ground rules are laid down. I do think we indulge our children too much, these days they seem to have a never ending source of cash and privileges that I never got.
Absolutely this, do the bare minimum, if the clothes aren't in the laundry basket, don't wash them. do not pick up after her, do not go in her room, it's her domain and if she wants to live in a pigsty, let her.
I know I've banged on about it on here but I cannot empthasize enough the importance of a diary. It really helps you understand the pattern and cope with things better. The symptoms are there but it doesn't encroach so much on life as you become able to distinguish what is hormonal behaviour and what is just normal stress. I know that when I start getting 'the smell' I'm about to hit the pityparty and withdraw from family so I can prewarn them.
ETA Your daughter comments that you are quite a relaxed Mother, it may be that your younger one needs more boundaries than you give her to feel secure. I was quite lax with my Son but only because I knew I could be as he was way more straight then I ever was at that age so I didn't need to be hardcore with him as he had his own very strong moral compass and wasn't particularly bothered about drinking and going out, totally anti drugs/smoking. Honestly if I hadn't have been there at the birth I'd swear he wasn't mine