Thank you. While the episode itself is brimming with great female characters, I was a bit sorry Ada and Vastra didn't have any real face-to-face time in 'The Crimson Horror'. I think Vastra would have recognised a kinship with Ada, despite their radical differences. Both routinely scorned from society for circumstances beyond their control; both determined, in their own ways, not to let that ostracism rob them of their agency.
And both clever enough to run rings around Gregson when the opportunity presents itself. :)