Female masturbation is permissible unconditionally.

Allah wanted the people who have made sins to turn from their sins and make up for them in order to be near to Allah through gaining His satisfaction, for He has promised to accept their repentance and forgive the sinner.

In addition, Islam stressed on purifying the body, clothes and everything that is related to man's private life in his land and home, from the unclean impurity.

The difference in sex does not hinder the ability of being strong on the levels of thinking, giving, having a strong willpower and the ability to take the right decision and the right position after studying all options, once the circumstances that favor creativity and rational thinking are available.

This Ayah indicates that the pious person should express his love to Allah by believing in His Prophet and following the Message, and through obeying the Prophet, abiding by his orders, leaving what he prohibits and obeying all what Allah has revealed to him, because that is the vivid expression of the practical love that fills his whole entity.

Shaking hands with the strangers of opposite sex is forbidden

Saying "Ameen" is permissible after reciting the Surah of al-Hamd in the Salat (but it's still not part of the Salat) especially with the intention of supplication.