"This woman is already at home" should be accepted as an answer to this.
это and эта sound that same too me, how can I know when it is either это or эта
Эта женщина уже в доме.
Wait so дома means home and доме house? Because when I put house instead of home it gave me an incorrect answer, I thought it could mean either one
No you misunderstood. Доме is how you conjugate дома if it's after в. В доме means "In the house" whereas дома just means house/home/etc. Я уже дома and я уже в доме translats to "I'm at home" and "I'm in the home/house" a minor distinction but it's the same distinction as in English. The first would be used if someone for example asked if you were at work you'd say "nah I'm home", the second if someone for example asked if you were in the lawn
Why "в дома" cuz i thought the locative genre made names following "в" and "на" end with е?