Travelling with a mahram

Going for Hajj without a mahram

Q: A woman went on hajj without being accompanied by a mahram. She had sons, but all of them were too busy with their lives to follow her so she went in a large, safe group of women. I know this is impermissible, but what is the ruling regarding the actual hajj - was her fard of hajj fulfilled? Or was it invalid, making it fard for her to repeat the hajj?

Travelling without a mahram

Q: I am living in Riyadh. I want to go for umrah from Riyadh. My brother is in Makkah and my sister is in Jeddah. Can I travel for umrah with my children by flight from Riyadh to Jeddah and perform umrah with my brother? He will pick me up from the  airport. If I stay for three to four days in Jeddah, from their can I perform umrah? From where must make the intention of Ihraam?