She had heard it was very cheap.

You could go for ten cents a night, or something like that.

Things that were ten cents appealed to her.
She was used to bargain-counters.
She heard it was quite respectable to go there, and they had classes in the evening.

You could study gymnastics, and it would make you graceful.
She wanted to be graceful.

And she heard they had a course in millinery.
If it was so, she believed she would go herself, and learn to make the new kind of bows they were having on hats this winter.