First of all, your sister is truly blessed with a BEAUTIFUL grand trine in Fire. Saturn in 9th house trining 5th house Moon and 1st house Sun...that is an amazing configuration to have. She definitely is multitalented and probably very creative with that Moon placement.
Her MC is on the last degrees of Leo, making the Sun the ruling planet of her career. Sun is in the 1st house with Mars, Neptune and Mercury. To me this shows an individual, that really needs to be their own person and really do their own thing. One option for your sister is really to have their own business that has to do with basically anything that she feels creative and passionate about. She might do well in teaching setting, with that Saturn in 9th house. Also she might do well in business or studying abroad.
Her chart is ruled by Mars and Mars is in Sagittarius. Her 6th house is also ruled by Mars. I would say that this would be a good chart for someone interested in fitness or health somehow, maybe diet. Her work could also involve a lot of moving around, maybe around the world or the country. Is she interested in health or food? Her Jupiter is in Taurus and sometimes this means that the person is very knowledgable and interested in anything to do with the wellbeing of the body and making sure the body is receiving the abundance of nutrients and exercise as it possibly can....
With placements like this I could definitely see her as someone like a health couch or something like that, traveling from place to place, teaching and giving presentations, highlighting the good of life and health.
Tell me what you think and I will get back to you