The day that her grandson was expelled from the Academy was not the worst day of Thirel's life.
('Thirel' isn't her name, but she hasn't thought of herself by the true name her parents gave her in half a century. It's not that it would put her in danger, exactly, to slip up on that - it's not as though anyone remembers or cares - but she has habits, which are hard to break.)
The war is over. It's the Glorious Future now, where two global powers will work together to transform everything. Or so the official propaganda says. She gave up on believing in that a long time ago, too.
(She fled the Empire forty years ago, pregnant. They selected her for it; the father of her child was a supposedly-brilliant magus whose face she barely remembers. She doesn't feel very clever, lately, but apparently she did well on their tests. Not that it ever earned her anything but pain.)
The day that her daughter died, leaving her four-year-old twins as orphans, wasn't the worst day of Thirel's life either. If only because she stopped thinking in terms of 'worst days' such a long, long time ago.
The day that that Jem, her genuinely brilliant prodigy of a grandson (who got himself expelled from the Academy and she is still not entirely sure she understands why) receives an offer of employment from Scioth's Institute of magical research -
- is obviously an occasion for celebration, and yet, nonetheless, it hurts more than many of the earlier candidates for the worst day of her life.
It's going to be all right, because she'll make sure of that, and that feels very fake but she apparently hasn't failed yet. So they're moving to another city.
She has savings. She arranges to sell their current house, in a village by the coast - it doesn't go for very much - and she arranges to rent an apartment.
She leaves her sixteen-year-old twin grandchildren with a friend, and she goes on ahead, to look over the new apartment and its surroundings, and plan ahead for what she needs to do next to keep her family safe.