Hurmat-e-musaaharah

Q: I have some questions about hurmat musaharah.

1. Is it established between a mother and daughter?

2. Is it established if one has wet dreams about incest or a sexual dream that has mahrams?

3. Is hurmat cancelled if parents remarry and sincere repentance is made? 

4. Lust is a strong sexual desire. If I don't feel a strong desire but I feel some type of lustful feeling that I try my best to control inside my heart at the time of touching, is this hurmat musaharah?

Reciting Quraan or visiting the sick while azaan is being called out

Q: My Quraan teacher for tajweed and tahfeez is in another country and temporarily teaching me over the phone. During this, if Azan is called, do I need to stop or can I continue since my Qaari Sahib will not be aware of the azaan being called out at our place?

Can we continue to see and talk to the patients in clinic or should stop while the azaan is being called out?