Complex sentence: At some point after her marriage, della Rovere apparently reconciled with her father and received a gift of 9,000 ducats, with which she purchased castle, Palo, from which she exported wheat with great financial success, often to the Vatican itself.
Split into simpler sentences: At some point after her marriage, della Rovere apparently reconciled with her father and received a gift of 9,000 ducats. With these funds, she purchased a castle, Palo, from which she exported wheat with great financial success, often to the Vatican itself.