Can you give us any more information about Olena? Perhaps we can help you find the right location in Norway for you to continue your research into the earlier generations.
Was the date given above correct for her birth? When did she emigrate? Any info about her other family that emigrated? Clues available for where in Norway these siblings came from?
What names did she give to her children?
Her marriage record in a Lutheran church might give info - at least about her father's name. Also Lutheran ministers often made notes in their church books about where new minister's made note of where new members had originally been baptised and/or confirmed.