Calculating according to the solar calendar

Q: A boy who has not had a wet dream becomes baligh at the age of 15. I am aware that this refers to the 15 years in the lunar calender, but since people generally do not know their age in the lunar calendar, can we instead just tell them "15 years", even if they will assume this to be according solar calendar? This since it is difficult for the awwaam to calculate their age according to the lunar calender. Similarly can we tell them that "A child should be made to pray at the age of 7", "the custody of a girl moves away from her mother at the age of 9" etc, even though we know that they will assume this to be solar years? Also, can we ourselves act on the solar years too, even though we are aware that lunar years are really meant?

Removing a forum post that one in unclear about

Q: I agreed to abstain from a particular website by someone I have to listen to in good and I have abstained for a lengthy period. But now I remember that I have at-least one post that is based on what I heard is a weak hadeeth and I do not want to leave it there, for someone to potentially be influenced by it and I also want to go through my posts for anything wrong within them, is this acceptable for me, knowing what I've agreed?

Addicted to the cellphone

Q: I am a sister from Karachi, Pakistan. I want a solution for my sister. She is bipolar and she is not practising Deen the way our family is. She is involved in someone who is not of or religion. She does not control her anger and will also attempt suicide, if the guy leaves her. She also talks to many other guys and her friend circle is also very modern. She can go to any extent (which is what I fear). My grandfather was a mufti and my family is very pious. If her mobile or any source of contact is taken she attempts suicide, which shows she is addicted. We have tried every possible thing being polite to her, beating her up but nothing works. We did a 41 days wazifa of surah baqarah for her but it doesn't seem to work much. Please give me a proper solution as to how shall I bring her to the right track. Give me any wazeefa if there is.

Muwakkils

Q: What is a muwakkil? The noorani jinn? Do they have a contact with angels? People get these jinns/muwakkils through doing wazifas of a silsila of qadria chistia shazlia etc. Is this correct?

Usools of the tablighi jamaat

Q: In the mastooraat programmes of the tabligh jamaat, some usools are, that ladies are:

1) Not allowed to give bayaan. Only speak a straightforward 6 points following the tarteeb without making it flowery and giving their own input.

2) Not allowed to sit on a chair and read the kitaab or speak the 6 points. To the extent that if a lady is elderly and normally sits on a chair then too she must sit on the floor otherwise she mustn't read.

I would like to know the basis of these usools if mufti can explain, the reasons ladies can't give bayaans, nor sit on the chair?