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This is perfectly normal. It would be weird if the narrator used "Mama" in your first example. "Jane's mother" might be acceptable, but just using "Aliana" is perfectly fine and clear. About you...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/32455 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/32455 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
This is perfectly normal. It would be weird if the narrator used "Mama" in your first example. "Jane's mother" might be acceptable, but just using "Aliana" is perfectly fine and clear. About your second example: the narrator can of course "look into the future" or just in the other room and thereby tell that it's not quite what the character thinks it is. There is no reason why he would have to stick to what the character smells. I think your examples are fine and this style is acceptable. In fact, I don't really see why you would think it's wrong in the first place. Imagine your narrator as a character - maybe he is omniscient or looking at it as if it was a memory, but he is still a character and as such he should be able to distinctly name other characters by names he would find appropriate and comment on things as he sees fit. He has a personality of his own.