So we've established that the querent is aquarian.sun, and the lady would be his eventual "other", which is the 7th.
But the question is not about whether the querent should or should not go with this lady, but simply whether her marriage will end in divorce.
She is mars, in her 3rd but nearing her 4th of endings. Mars in its fall shows her not in a happy position, in addition to Chiron who has just passed a conjunction with the 7th. South node is in her 7th house, another sign of difficulties in the marriage, with problems from the past still to be worked out by her.
Moon in the sign of marriage will square mars, traditional planet of divorce. This is a sign that she will divorce.
Her husband, and marriage, is the 1st house, Venus. Venus approaches a square to Neptune, another sign of possible divorce.
Pluto of breakups and transformation on the 4th cusp of endings, and family life, squares the nodes, that involve both 1st and 7th.
Again, a sign of difficulty and disruption of the relationship.
The vortex, which is symbolically a descendent, is conjunct Uranus, the other planet of divorce.
The Part of Divorce is at 26 Sagittarius, opposing Venus of the husband/marriage, and squaring Neptune.
Although mars appears to be approaching a square to Jupiter on the 7th, it will go retrograde before it makes the contact.
Jupiter rules her 9th of documents, divorce.
Venus is on her 3rd, opposing her 9th of divorce.
So, it does look like she is sincere in wanting the divorce, but it may not go ahead.
Not a reassuring answer for aquarian.sun, and understandably there are yes and no replies here.
Note that her POF is in her 11th of friendship, trine her ruler mars.
She may just choose to continue the marriage, as a friendship relationship but not divorce.