It is completely understandable why your family is experiencing so much tension, but analyzing her horoscope reveals that her behavior, career struggles, and marital distance stem directly from heavy planetary timelines. Between March 2007 and March 2014, she was running her Mars Mahadasha, a period that naturally brings strong aggression, a quick temper, and rebelliousness, which triggered the initial conflicts and arguments with her parents. In March 2014, she transitioned into Rahu Mahadasha (running until 2032), which explains her extreme secrecy and non-communicative nature. Rahu sits in her 5th house while its ruler Mercury resides in her 12th house this placement creates intense stubbornness, a desire to do everything strictly on her own terms, and an inclination to build walls around herself, refusing to share her thoughts mercury is karaka for speech even with immediate family. Regarding her career, while her 10th lord Venus sits in the 1st house alongside Sun and Jupiter, her 6th lord Saturn is retrograde in its own sign in the 6th house. This retrograde Saturn influence generates long delays, deep internal daily frustration, and a rigid refusal to pivot or adapt to other career domains despite holding a B.Tech degree. Similarly, in marital matters, Saturn rules her 7th house of marriage; its retrograde placement in the 6th house (daily-struggle), combined with Rahu’s ongoing influence, creates sudden emotional detachment, severe friction, and immediate separation right after marriage. Her refusal to speak about it comes from a mix of deep internal confusion, pride, and feeling completely misunderstood. To handle this situation, direct confrontation or aggressive questioning will only trigger her defensiveness and cause her to shut down further; the family should maintain a soft, low-pressure approach or involve a neutral third party to open up dialogue gently.
Looking at your brother-in-law’s chart alongside your sister’s adds a lot of clarity to the situation. In his chart (Aries ascendant), the 7th lord (Venus) goes directly to the 8th house (Scorpio), sitting alongside Mercury and Moon. The 8th house is the house of secrets, hidden matters, and deep transformation meaning her partner could be naturally very secretive or hiding things himself. While this combination can sometimes point to past hidden matters or unrevealed personal dynamics, it manifests differently in every chart. Additionally, his 7th house dynamics bring in Sun’s authoritative nature, which easily triggers ego clashes if expectations aren’t met on either side. Combine this with your sister running her Rahu Mahadasha (which creates heavy illusions, suspicion, and emotional walls) and her husband running his 8th house Mercury Mahadasha, and it becomes clear that both individuals are operating under immense hidden tension and miscommunication. Looking ahead, he will transition into Ketu Mahadasha in October 2029, which naturally signifies detachment and distance, indicating that emotional friction could persist if left unaddressed. It is a tough and delicate situation where either your sister or the husband is holding back key truth from the past. Since things are at a crucial juncture, the best step is for senior members from both families to sit down transparently, open a gentle dialogue, or seek professional counseling and I sincerely hope they are able to work things out together.