DM is 70 and usually in fairly good health but came down with something nasty (possibly flu) yesterday. She fainted yesterday afternoon, sounded awful and has slept most of the time since then according to my dad. He is useless, doesn't help much around the house or with their pets and has, during past occasions when DM has been ill, expected/allowed her to do far too much.
I rang this afternoon to see how she is and DF answered, said DM had been downstairs for a little while and 'done some pottering about' (which probably means she felt forced to come down to feed and take care of the animals because she couldn't trust him to do it) and has now gone back to bed. He said he didn't know whether she'd had anything to eat or drink (!!) and seemed to think she was better today because she hadn't fainted again, despite the fact that her going back to bed is incredibly unusual for her even when ill (she's the stoic sort) and knowing her she came down, did the bare essentials and then got herself back to bed before she actually did faint again.
So now to my question, my gut is screaming at me to go and take care of her but I don't know whether it's the right thing to do. I'm alone here (DH away for work) with DD(13) who is autistic and couldn't really be left for extended periods, I also have pets to look after. DF would likely not be pleased at me turning up and would take it as an insult despite him being clearly crap at looking after her. We're supposed to be at the in-laws (also in their 70's) for Christmas too so I'm concerned about ruining that for them and DH/DD if I put myself and/or DD in the firing line to catch whatever DM has, or potentially passing it on to PIL if we happen to be incubating but not actually ill by the time Sunday comes round.
If I could speak to DM myself it wouldn't be so bad as I could at least assess how she sounds myself instead of having to trust DF's word, but I also don't want to disturb her if she's sleeping so don't want to keep ringing. It wouldn't be uncomplicated for me to get to them (no car) but I could probably leave DD long enough to get there and back to check on DM, not sure what I'd do if I get there and she needs me to stay though, DD and pets would need me back. I don't know what to do for the best.