My girlfriend who is older than me has a retrograde Saturn in the 7th house in the sign of Aquarius. Will there still be a chance that I might marry her?

See, your girlfriend has saturn in the 7th house in the moolatrikona sign Aquarius, and that is the reason she is elder to you… Why? because saturns placement in 7th house even in its moolatrikona sign would delay marriage. So may be when she would be above 26–28 years, after that only she shall be able to get married.

Saturn has penchant of delaying the matters associated with the house in which it is placed (even in moolatrikona sign). She may have several break-ups also due to her ego/ over confidence troubles being Leo ascendant. she may be very romantic with grandeur personality with round face and attractive face. Her nature would be also very helping, friendly, caring, creative, communicative, sharing and enjoy or like to be in gathering or group of people.

Her relationship domain, she would be very caring, committed, sincere and reliable in maintaining the relationship. She is fun loving and like to enjoy parties & get-to-gethers.

As Saturn is hindering her to get married or getting in to relationship, she is still waiting for eligible bachelor who can give her committed, cherishing, happy, cheerful, celebrating life. & that is the reason, she is still available and so she may be elder to you. Based on this placement, she is worth for maintaining, nurturing, nourishing relationship. But you should check her entire horoscope to know the detailed traits of this lady.