Having regulated her thoughts and comforted her feelings by this happy mixture of reason and weakness, she was able in due time to go down and resume her usual employments near her aunt Bertram, and pay her the usual observances without any apparent want of spirits.
If, as I am willing to suppose, you wish to shew me any observance, you will not give way to these emotions, but endeavour to reason yourself into a stronger frame of mind.
…Crawford had too much sense not to feel the worth of good principles in a wife, though he was too little accustomed to serious reflection to know them by their proper name; but when he talked of her having such a steadiness and regularity of conduct, such a high notion of honour, and such an observance of decorum as might warrant any man in the fullest dependence on her faith and integrity, he expressed what was inspired by the knowledge of her being well principled and religious.
There are no more uses of "observance" in the book.
Show samples from other sources
As her release date neared, Vanessa got increasingly anxious, with a decided uptick in religious observance.
Piper Kerman -- Orange Is the New Black
"Religious observances shouldn’t be denied to anyone."