"If it's just one night, I'm sure you won't be satisfied in letting go of your longing for Dean. So, it's better to insult a few days isn't it?" Brian flirted. Which actually made Dean an excuse so he could let go of his longing for Elena. And see often seeing Elena at the Mansion later.
Elena thought about what Brian said and finally she seduced him.
"Okay, I'll go insult a few days. Besides, the boss where I work has given me a few days off."
Because previously Elena was a prospective bride, the boss gave Elena five days off. But because now it is not her who is married and instead she stays at home for five days. So it's better for Elena to go insult at Brian's Mansion for just five days. That way Elena can release her miss for Dean, her son.
Elena knew that Diego would be worried about her situation if he heard that she was going to stay at Brian's Mansion. So, Elena will talk to Diego first.