YOU SAID:
she wants to get married but she don't want to get married to me
INTO JAPANESE
彼女は結婚したいが彼女は私と結婚したくない
BACK INTO ENGLISH
She wants to get married but she does not want to marry me.
INTO JAPANESE
彼女は結婚したいが、彼女は私と結婚したくない。
BACK INTO ENGLISH
Although she wants to get married, she does not want to marry me.
INTO JAPANESE
彼女は結婚したいが、私と結婚したくない。
BACK INTO ENGLISH
Although she wants to get married, she does not want to marry me.
That didn't even make that much sense in English.