After countless years of support from Marshall, verbally and nonverbally, in whatever pursuits she followed, whether it made money or not, after mere weeks of Marshall needing her unconditional support, she snaps, compared to a lifetime of Marshall waiting on her hand and foot, and was going to ditch Marshall to go to Spain. Because, "Marshall doesn't pay attention to me anymore" God forbid he enjoys his non-paying gig. And let's remember, Lily was guilting Marshall for NOT being a hippie and liking his corporate job, and now she's angry that he's being "the man she loves". She has a tendency of twisting everything and playing victim in every scenario, and any dispute with her in the group ends with "Lily's right" even though she's the absolute worst.