No wedding would be complete without a little family drama behind the scenes. This woman got into a spat with her step-mother-in-law before her nuptials. In fact, the OP wrote to r/AmItheA**hole to get some clarity on the situation before marrying her fiancé . As she tells it, she and her fiance are planning a summer wedding that will be casual and “not doing all the traditions." By that, she means that she's walking down the aisle with her sister, while her fiancé wants to walk down the aisle…