If that was the case then I believe the Crown would have gone to Victoria's first cousin
George V, King of Hanover and 2nd Duke of Cumberland and Teviotdale, Georg Friedrich Alexander Karl Ernst August. Tracing his issue (the House of Hanover) through the centuries brings us to
Ernst August V, Prince of Hanover, pretender to the throne of Hanover.
http://en.wikipedia.org/wiki/Ernst_August_V%2C _Prince_of_Hanover
But complications exist with his marriages. He divorced his first wife 10 years after he "ascended the throne" - would that have happened if he was King?
He married his second wife, Princess Caroline of Monaco, in 1999 but being Roman Catholic, divorced, pregnant and an heir to the throne of Monaco would probably never have been allowed to marry "King Ernst August" under provisions of the Act of Settlement 1701 and the Royal Marriages Act 1772. Any intention to marry would probably have triggered a constitutional crisis. It is unlikely that their relationship could have existed and flourished anyway.