Do we think she is a scared, anxious mess away from IG but feels the
expect the sunny, positive Nic version? Ignoring the reality and talking excitedly about
bleeping cookies and fun adventures in Sainsburys?
I'd find this more believable than the fact she isn't worried about jack
tit and is having a lovely time whilst dying? I don't think she has much time left at all and should have said her goodbyes and behaved with dignity and removed herself from SM. Give her family 100% of the remaining energy and attention there is left.