What are the motifs in The Mysteries of Udolpho by Ann Ward Radcliffe?

Loyalty and devotion are ideas that are seen much less frequently throughout "The Mysteries of Udolpho", but they are present nonetheless. One such example is Emily's devotion to Valancourt. She rejects Count Morano and Du Pont's suits because of her love for Valancourt. Valancourt is also loyal to Emily, though he makes some mistakes in his behavior that causes her to renounce him. Regardless of this separation, Emily never encourages any other suitor and continues to think and worry about Valancourt.