It is permissible to touch the dead, but if the body is cold and not given the ghusl then it is obligatory to perform ghusl of touching a dead body. The said ghusl is not required if the body was still warm or has been given the ghusl. Ghusl is not obligatory in all cases with the presence of a barrier between the hand and the deceased's body.
It is obligatory to pay the kaffarah for committing abortion. It is the same as the kaffarah of deliberately taking the life of an adult, which is freeing a slave, feeding sixty needy believers, and fasting for two consecutive months.
It is permissible for the person to lead the prayer after repenting to Almighty Allah and seeking His forgiveness.
You can break your fast at the disappearance of the sun, which is when the Sunnis also break their fast. If they break their fast before that, and you did so with them out of fear, then your fast is valid.