Her eyes were weak and watery; her spectacles strong and thick; her nose indeterminate, wavering, erratic; her ears large, her teeth irregular and protrusive, her mouth unfortunate and not guaranteed to close.
An ugly female face is said to be the index and expression of an ugly mind.

It certainly was so in the case of Miss Smellie.

Not that she had an evil or vicious mind in any way--far from it, for she was a narrowly pious and dully conscientious woman.

Her mind was ugly as a useful building may be very ugly--or as a room devoid of beautiful furniture or over-crowded with cheap furniture may be ugly.
And her mind was devoid of beautiful thought-furniture, and over-crowded with cheap and ugly furniture of text-book facts.

She was an utterly loveless woman, living unloving, and unloved--a terrible condition.
One _could not_ like her.
Deadly dull, narrow, pedantic, petty, uninspiring, Miss Smellie's ideals, standards, and aims were incredibly low.
She lived, and taught others to live, for appearances.
The children were so to behave that they might appear "genteel".