Does a woman's leaning with her body during the circumambulation (Tawaf) to the right or left to avoid people or touching men, and changing her path by moving away from or closer to the Kaaba, affect the validity of her 'Umrah, which she has performed several times, and is there anything due upon her because of that, as she wishes to contract a marriage?

For the validity of the Tawaf, it is a condition that it takes place inside the Grand Mosque (Masjid al-Haram), and that the circumambulator keeps the Kaaba to their left. If the circumambulator turns due to crowding, such that the Kaaba ends up behind them, in front of them, or to their right, their Tawaf is invalid, and they must return to where the Kaaba was to their left and complete the Tawaf. However, a mere tilting of the circumambulator's body to the right or left is not considered a deviation that invalidates the Tawaf. So, if the Kaaba remains to her left, the woman's Tawaf is valid, and her Umrah is valid.