I seem to have been unclear. I meant to refer to your last paragraph, where you mention surprise that the end-of-the-book Jane Fairfax forgot long years of neglect, and a recent history of prying questions followed by snubs.

Since I doubt Emma grilled anyone, including Jane Fairfax, and I think Jane Fairfax was not trying to further a friendship with Emma (therefore likely did not take umbrage at any of Emma's inaction, merely being mildly grateful for such kindnesses as Hartfield offered her family), it does not seem odd to me at all that Jane was ready to engage Emma on a more amiable basis, once her secrets were out, and Emma showed interest and delight in Jane's prospects.