She said little, assented only here and there, and betrayed no inclination either of appropriating any part of the compliment to herself, or of strengthening his views in favour of Northamptonshire.
She assented to it all rather by look than word.
…and though infinitely above scheming or contriving for any the most advantageous matrimonial establishment that could be among the apparent possibilities of any one most dear to him, and disdaining even as a littleness the being quick-sighted on such points, he could not avoid perceiving, in a grand and careless way, that Mr. Crawford was somewhat distinguishing his niece—nor perhaps refrain (though unconsciously) from giving a more willing assent to invitations on that account.
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Show samples from other sources
She takes my silence as assent.
Sabaa Tahir -- An Ember in the Ashes
Their murmurs of assent and disapproval gave her a sense of order and rightness.