Kristina-- sisters should be the best of friends in a perfect world, but life doesn't always give us the ideal sister. With your Venus (affection, relationships) conjunct your sister's sun (her identity) you probably feel this problem more than most. Especially since you are so close in age! I wonder, also, if when you were little, your young Leo sister might have resented the new baby who meant that she couldn't be your parents' entire centre of attention any more. I don't know what her childhood was like, but her chart suggests some difficulties; and if you were raised by your grandmother, probably your sister didn't experience her upbringing as ideal, either.
Kia, if you want to be a deacon in your church, I think you would be good at it. Intuitive and psychic abilities come in many forms. I think you have some ability to know what people are thinking and feeling-- even before they fully realize it themselves! I think you would be very good with pastoral care; or even some type of hospital chaplaincy or hospice (palliative care) work. Someone who is very ill or at the end of life would benefit enormously from your intuitive, sensitive nature. (Moon, Jupiter in the 8th house; Mercury-Venus in the 12th.)
But first, make sure your own emotional state is on a solid basis. Otherwise it will be difficult to help other people. If you are a Christian, let your religious faith show you the way! If you can see how God and the universe support you at all times, then you will be in a position to give your love and strength to other people in need. (Your mother, for one.)
Perhaps, in having experienced your sister as emotionally distant and cold, you can better relate to others in distress who are alone in the world.
Your north node (of the moon) in the 9th house suggests that your growth lies in activities that expand your mental horizons, through overseas travel, higher education, theology, or developing a life philosophy.
With Saturn in the 4th house of early childhood conditioning, you are apt to experience your childhood as deprived and imperfect. But this should help you to grow, also, in compassion for other people, whose lives aren't so perfect, either.