ところ (tokoro: place, point)
それがあなたのいいところです。
Sore ga anata no ii tokoro desu.
That’s what’s nice about you.In other words, that’s where your strength (or literally, your good place) lies.
驚かないところを見ると知ってたのね。
Odorokanai tokoro o miru to shitteta no ne.
Seeing as how you’re not surprised, I think you must have known.驚 (odoro(ku): to be surprised)
見 (mi(ru): to see)
知 (shi(ru): to know)