Well you can talk with her in a few places, the vegetables garden , the kitchen, and her room , some time inside the city(only in quest) , and in a way or another you might actually activated the quest but you did not see or bulged and did not show as a quest or idk , try to go on the road behind the house at night , there is a chance you are going to hear a sound and be able to investigate to continue the story.
Not sure, Cruz when I play it I just helped when i could like quite a lot in the garden then because i like to explore i just have go through the quest, small tip, go in different places at different times , trust me