Which is better when prayer is difficult: combining prayers or the fear prayer?

The questioner should have provided an example of the situation in which it becomes difficult for her to pray, because Salat al-Khawf (prayer of fear) is not prescribed in every situation; rather, it was legislated as a relief and a protection for Muslims from their enemy. Similarly, combining prayers has specific circumstances in which it is prescribed, such as travel, rain, and illness. Combining prayers due to hardship and need is permissible according to some scholars. However, whoever does not have a legitimate excuse that permits combining prayers must perform each prayer at its appointed time.