She'd tell her son how much she loves him and how proud she is of him. She'd make sure that her will was up-to-date, so all the friends and family would get what's coming for them. She'd try to tie up any articles she's not finished yet.
Then she'd spend the remaining time with said friends and family, making sure she'd have no regrets. Break out all her stashed sweets and best wine, her favorite music and reminiscence about lives and what might come afterwards. Maybe set up a test to see if she'd be able to contact them from beyond the grave.
Optionally she'd smash her assistant or the handsome Vice-Commander of Cogwheel Association but ONLY if they make the first move and had the state of mind to do some convincing. Because even though she really wants to she'd also think that she'd be re-united with her husband after death which would make the prospect a bit awkward. Thus she'd feel better if she didn't seem too eager to take the chance.