Mara is not a living being, like a human being. Moreover, Mara is not of feminine gender.
Mara represents the obstacles on the path to enlightenment, such as:
- emotional degradation, and
- fear of death.
Mara represents our deep inner self and our inner belief system.
Mara tempted Buddha so many times to abandon his quest which he did
Yes, it happens to anyone practicing the path. How many times your inner doubts, your inner voice tells you something to deviate you from the practice; how many times you question the validity or efficacy about the practices; how many times you feel it is useless to practice these practices, and so forth. For example, during your practice of eating two meals a day of simple food, how many times did your mind think about delicious food, how many times did you "miss" certain types of food, and so forth? These are your inner temptations to steer you away from your practice and go back to the materialistic world and be trapped endlessly in samsara. Buddha was also facing inner turmoil. He did not succumb to the pressures of these inner doubts, questions, and temptations.
Yet Mara herself never suffered due to her own Karma or due to her
Mara does not represent the feminine energy. Mara is representative of the masculine energy. As I mentioned above, the four major Maras, or inner obstacles on the path to enlightenment, are greed, passion, emotional disharmony/degradation, and fear (of death, and so on). Now, just think. How can your inner quality of greed suffer? How can your inner fear suffer? These are the same inner qualities and belief systems that are the root cause of all your karma, good or bad karma. These inner qualities make you behave, react, or respond in certain ways, intentionally or unintentionally. Therefore, it is you who will suffer when you succumb to these inner qualities or Maras.
Mara is alive even today.
You are correct! Mara will always be alive as long as sentient beings exist. Isn't this exactly what the Buddhist philosophies teach you to abandon? To abandon the Maras that trap you to cyclic existence (samsara)?