She's only pre warning you incase you are wondering why she's not contacting you. She will be caught up with her dh and won't want the worry of people chasing her down to talk.
Of course she could change her mind and need you more.
When facing death, and speaking from 1st hand experience here as I'm dying, things are cut and dry you become very matter of fact. Of course those around you feel the sadness. Lots of people will tell others not to fuss but people do as it's human nature, we all want to be needed.
I've people coming out of the woodwork, ringing every day, making big plans for days out, wanting to come and stay. Texting, then phoning when I don't answer, I've a sister who phones, texts 5 mins later, phones again to ask if i got the text, then texts again. I've a sil who feels she should spend 4 days a month here for drinking sessions and making fucking bucket lists. You know, sometimes i just want to put my feet up and watch real housewives.
What I'd do if I were you is say, I'm always here for you ring, text when you need me, any time of the day. No matter what you want I'll wait for your lead and respect your wishes