Zikr & Dua

Q: Is it permissible to read zikr in your mind without wudhu?

Q: My mother practices many zikars x-number of times as she’s been told by her late-brother that this brings much success. He was involved in Tableegh for MANY decades. I am trying to persuade my mother to abandon all this, and to solely act upon the authentic Sunnah. A close friend who is closely involved in Tabligh said to me that for me to abandon such practices is a sign of nifaqh, and as good as the Sunnah as it has supporting evidence from the Sunnah, that I am ignorant of. My questions: Is he correct? It’s a sign of nifaqh? Is it sinful for my mother to abandon all such practices, and solely rely on the Sunnah.

Q: Is there any masnoon dua for asking Allah Ta'ala for Shahaadat?

Q: Is it allowed to read zikr in your mind without moving your lips or tongue?

Q: I have a shia friend - suffering from cancer, can I pray for her recovery?

Q: Can we recite only istighfaar during periods or tell me any recitation which is allowed during period days?

Q: Is it advisable to say "thumma ameen". Is there any significance in saying thumma with Aameen?

Q: Is there any masnoon du'ah to read before mashwara? People says to read اللهم الهمنا مراشد امورنا...

Q: I wanted to know that must every Muslim speak in Arabic or make dua only in Arabic. I read Qur'an in English transliteration of Arabic, so is it right to do or not?

Q: If I do not touch the Arabic text, is it permissible to read from Munaajaat-e-Maqbool without wudhu?