allow me to put this into perspective for you.
if you explored your S/O's browser history and saw semi naked pictures of a man with a better physique than yours, or one where certain parts of him triggered insecurities within you and sparked a question internally if your S/O is seeking more than what you have to offer, would you be affected?
women try so hard to mask their deep emotions, but being the naturally emotional creatures they are; try and internalize their feelings (in fear of seeming irrational to their male counterparts); which in turn builds up, and eventually causes an outburst of expression. due to their embarrassment in being so emotional and candid in the moment, they then tend to retreat and distance themselves from the situation and parties involved to gather their thoughts and regain themselves. nine times out of ten, they are simply grateful that they released everything/the pain they were truly feeling and are content from that point onward to work to move forward with their partner and reestablish balance in the relationship.
give her the time and space she needs to heal, and she should be fine.
good luck
...kytnism...