Purdah

Having meals with non-mahrams

Q: Is it permissible for me to sit and eat with my girl cousins while her father, mother, brother and my mother are also seated there.

Also, can I say جَزَاكَ اللَّهُ خَيْرًا and speak about general things like Madrasah with her mother, who is my mother's brother's wife while they are wearing abaya and scarf but part of their hair or neck is exposed?

Woman conducting an online course

Q: I am a woman and need to earn money. I have developed an online course that will not reveal my face but I need to record my voice explaining the content, and I cannot limit the course to only women (there is no way to do this on the online course platform). Though people will hear my voice, no one will know me. Is this halal?

I may also be able to use a software to change the pitch of my voice slightly (lower the pitch of my voice). Is this better?

Woman conducting online programs for other women

Q: I would like to find out the permissiblity of conducting programs online via zoom or other such medium for woman. A reputable muallimah will recite zikr, Quraan, give some naseeha, etc. These classes are only for women to participate and rules state that no men should be able to hear the female speaker. Links for online classes are sent out just before the programs so that no one besides those registered will be able to listen in.

Is it permissible to conduct such programs?

Will it be permissible for me (a female) to listen and thereby encourage to such programs?