What did Jessica think of her house? Did she have any reason to think of it that way?

When Jessica was bidding adieu to Launcelot, she said that the house had been turned into a veritable hell.

Though she was a person of an objectionable character, she had the reason to think that the house where she lived with her father was a hell. That the atmosphere of the house was suffocating was evident from the way Shylock told his daughter to lock the doors and windows of the house to prevent the sound of the fife that would be played by the Christians. It was the orthodox nature of Shylock that created an atmosphere resembling that of a hell.