"How can a Christian woman go this far by getting caught up into pornography?" There are many reasons.
No husband or wife, however, is required to submit to sex acts that he or she considers degrading, and it is a distinctly unloving act to push one’s spouse to do this.
Each gender has its own marital duties that when practiced appropriately make the marriage thrive. "The husband should fulfill his marital duty to his wife, and likewise the wife to her husband." (1 Corinthians 7:3)