That "petit cochon on tour" was a weird thing to call herself.
I have no argument with her calling herself a pig mind. We have all seen the state of her nails, her hygiene routines (3 day tights and knickers anyone?), and who could forget the condition of every kitchen she's had. However I think the piggy description has a more sexual connotation, where she might be known for snuffling her face into her partners nether regions like a pig rooting out truffles (I now feel really nauseous and I'm glad I haven't eaten breakfast yet
).
As for the "on tour" bit, she had gone to America for a holiday. The "on tour" is just her tricksy wording to make people think she is taking her coolinary skills on a working tour of the country. Hanging on to the coattails of a sugar mama doesn't make a tour by my understanding of the term. It was a blagged holiday. And like all her holidays, one she went on without her son.