1886 Norway to Sioux City

I found on Ditigalarkivet "Emigrants from Trondheim 1867-1930" a listing for Anna Vold. Date of registrtion 05.05.1886. Line American. Ship Hero. As I understand it, she would have traveled to Hull and from there traveled to London, Liverpool, etc. and then most likely on to Quebec. Other than no obtaining a list of arrivals in Quebec, any other suggestions? What time frame should I look for? Two weeks from the date of registration? Or two weeks from England? How long a journey would it have been from Trondheim to Hull? Any help in pointing me in the right direction will be greatly appreciated. Debbie