Will my sister (from my mother's first marriage) arraign contract which my mother have with me (after my mother's death).
Here is the chart:
If I use 1st house ruler for me, Me and Moon, and for sister ruler of 3 house, what ruler to use for contract, because I think it is also 3 house matter, but it is already used?

Can you explain what it means to arraign a contract? Usually the word arraign pertains to criminal/jail matters.

The Moon, your co-signifcator, conjuncts the 8th house of inheritances. Do you mean to ask if your sister will to go to court and try to set aside your mother's will?

If not, what kind of contract is there between you and your mother?

Dlynne

Do you mean to ask if your sister will to go to court and try to set aside your mother's will?

Yes, you are right. My half-sister is not mentioned in that contract.

Here is my judgment, for what it is worth.

Your sister is represented by Mars, since Mars rules your 3rd house of sibligns. Mars forms an exact square to your co-ruler, the Moon, conjunct the 8th house of inheritances (and taxes, too ). Yes, there will be antagonism between you and your sister over your mother's will. It is interesting that your significator, Mercury, is in your sister's 3rd house of siblings, or your 5th house.

Mars is in your 4th house. I wonder if you and your sister are currently living together in your mother's house? If so, any arguments or lawsuits will not be successful, because your sister's house (your 6th house) is represented by Saturn, and is in mutual reception with your ruler, Mercury. Further, Saturn sits in your first house.

If you and your sister currently do not live together, and although the lawsuit is not yet "born," I look to the 10th house. Deborah Houlding says about the 10th house: "If a matter of law is being considered with respect to a ruling, the decision or outcome should be judged from the 10th house." Here, the ruler of the 10th is Mercury, the same as your significator. The part of fortune is found in the tenth house.

My judgment is yes, your sister will be angry about your mother's will. She may file a lawsuit, but it will not be successful. I note that Mars (your sister), although in its sign of exaltation and in an angular house, is, in the end, not stronger than your ruler Mercury, conjunct the North Node and not afflicted by other planets. It has a lot of accidental dignity, and is dignified by term.

I have one question: the Moon, natural signifcator of the mother, just recently separated from a sextile to Mercury. Was your Mother's decision to write a will in your favor a recent decision, or did your mother recently pass away? Thanks.

Dlynne, your analyses is very interesting, I learn a lot from your post.

If you and your sister currently do not live together, and although the lawsuit is not yet "born," I look to the 10th house. Deborah Houlding says about the 10th house: "If a matter of law is being considered with respect to a ruling, the decision or outcome should be judged from the 10th house." Here, the ruler of the 10th is Mercury, the same as your significator. The part of fortune is found in the tenth house.

We do not live together. Thanks for pointing this out (about 10th house), I did not know that.

I have one question: the Moon, natural signifcator of the mother, just recently separated from a sextile to Mercury. Was your Mother's decision to write a will in your favor a recent decision...

My mother wrote it few years ago and is alive.

Dlynne, thank you so much for your help.