@TheOther - Yes, I was fairly certain at least.
The first time Sikori is listed, it is in the column for their last address. In the second box, it's asking for the name AND ADDRESS of the closest relative from whence they came. So she lists her mother-in-law, and the town Sikori again. I'm assuming they lived with/near Stephen's mother in Sikori.
Re: the location, a poster from another forum (Elzbieta) has a hypothesis that would put the 3 locations near each-other.
1) Sikori or Sikory or Sikórz (what is listed as the last address/mother-in-law's addresss)
2) Biala (listed as Frances' birthplace)
3) X... ynowo, Murzynowo (I see the first letter M) [listed as daughter Helena's birth place]
I found such "constellation" near Płock.
1.
Sikórz - wieś w Polsce położona w województwie mazowieckim, w powiecie płockim, w gminie Brudzeń Duży.
pl.wikipedia.org/wiki/Sik%C3%B3rz_%28wojew%C3%B3dztwo_mazowieckie%29
2.
Biała - wieś w Polsce położona w województwie mazowieckim, w powiecie płockim, siedziba gminy Stara Biała.
pl.wikipedia.org/wiki/Bia%C5%82a_%28wojew%C3%B3dztwo_mazowieckie%29
3.
Murzynowo - wieś w Polsce położona w województwie mazowieckim, w powiecie płockim, w gminie Brudzeń Duży
pl.wikipedia.org/wiki/Murzynowo_%28wojew%C3%B3dztwo_mazowieckie%29
Map