After the fight in the lily pond, Krystle would probably never fight Alexis again (considering Blake’s reaction). But, there is only so much Krystle can take. Following her quickie divorce to Dex, Alexis fantasizes about Blake and somehow believes that she can get him back. When Blake rejects her (again!), Alexis vows revenge.
Meanwhile, Krystle is not happy to learn that Alexis made another play for Blake. Further, Alexis is starting to spread rumors about Krystle and Blake’s marriage. Krystle tries to confront Alexis at a dedication of some forest land, but Alexis blows Krystle off. For some reason, the two find themselves in the woods. Wasn’t the car right near the woods? When Krystle tries to stop Alexis to confront her, the two go tumbling down and land in a pit of mud. Let this be a lesson about wearing heels in the woods.
Alexis is not happy that Krystle ruined her dress and expresses her displeasure - by throwing her purse in the mud. In fact, Alexis was so upset she storms off without her purse. I suspect there is something in there that she needs. At least Krystle is kind enough to throw it at her, while Alexis heads to God knows where - probably Australia to go fetch Ben.