Or they will agree to partner, but on their own terms, which doesn't necessarily mean marriage. Why? Because it is useful to them, it is a dangerous world.
Indeed! We notice that they have both
repeatedly found it useful to partner-up. I don't expect that to change; in fact, I suspect one of the sub-plots of Twelve Months will be Lara & Harry partnering to figure out how to end the engagement without pissing-off Mab.
They are not fools, so neither of them thinks it a good idea to overtly oppose/defy Mab; so they proceed with the engagement; this (the Lara/Harry dating, the WhiteCourt/Winter negotiations) I expect to take up a fair bit of the
Twelve Months page-count. Equally, neither one of them likes being ordered-around in this fashion, for their own respective reasons (if it were upon her own initiative, I suspect Lara would rather like the idea of marrying Harry).
I don't expect the marriage to take place; but I don't expect Jim to write it as a gradual cooling-off / moving-apart. I'm unclear if it will still seem to be on-track at the close of
TM, or if it will blow up before then.
The thing is: I don't think Mab actually wants (nor expects) them to get married. That is not Mab's agenda. I'm pretty sure the mix of [Winter Mantle X Whamp Hunger X Strong Wizard] is explosively-unpredictable
even to Mab. Mab hasn't spent all this time forging & tempering her newest Knight, just to destroy him.
You know what
is predictable to Mab? That neither Harry nor Lara will much like being ordered to get married, and one or both of them will be able to provide reasonable excuses for a delay, when put on the spot that way.
My own theory: given Papa Raith's known Outsider-magic, Vittorio's possession, Justine's Nemfection, and possibly other things known to Mab but not yet appearing on-screen (or hints missed), some undiscovered Nemvector inside the White Court has got to be looking awfully-likely to Mab.
She needs someone on the inside; ideally, someone who can... errr... "troubleshoot" whatever they uncover.
Enter, stage left: a patented Harry Dresden Anarchygasm (engaged to marry the White Queen).
Mab
knows the situation is unstable.
She is, in fact,
counting on it.
And she does it all by
allowing them(!) to "convince her" to give Harry a full year to
court Lara uncover things in the White Court...