Let`s enable that walk-in after the player has helped the shepherds, establishing some good guy cred. As he then next navs to the farm there can be the teen couple seen in the distance, sad-looking and walking away quickly. Then the mewing basket and the look/dont look choice before Corbin takes it and goes to the farm house with the comment "Anthony needs to see this", leaving the player standing at the gate.
A first real meeting can then be set two days later with a counter, in which Anthony then explains that Selena grows in sudden leaps - allowing to switch over to a "grow after event" progression. (Otherwise there is a risk of the player missing everything if he is out for a long time.