I don’t remember much about this movie because it’s been a while. It could have been made sometime in the last 20 years.
I remember a girl a boy in a house (kitchen?), he was trying to get her to stay, I believe. She decided to leave. She escaped from a tunnel.
That’s all I remember.
a wild stab here, but… The People Under the Stairs (1991)?
http://www.imdb.com/title/tt0105121/?ref_=fn_al_tt_1
Could it be Flowers i. The Attic