Her birth registration:

Surname   First name(s)   Mother   District  Vol  Page
Births Sep 1911   (>99%)
CHEETHAM Marjorie Love Lincoln 7a 1003
CHEETHAM Marjorie Love Lincoln 7a 1008

And magnifying the image makes is clear that the page number is 1003
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This looks like her marriage, being the only one in Lincoln:

Surname   First name(s)   Spouse   District  Vol  Page
Marriages Mar 1937   (>99%)
Cheetham Marjorie Sills Lincoln 7a 1169
Sills John M Cheetham Lincoln 7a 1169

and this looks like their only child between 1936 and 1960:

Surname   First name(s)   Mother   District  Vol  Page
Births Mar 1940   (>99%)
Sills Mavis Cheetham Lincoln 7a 1409

There is no John M Sills death, from FreeBMD from 1940 to c 1960, nor one on war.  Nor one for Marjorie.
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Their marriage registration:

Surname   First name(s)   Spouse   District  Vol  Page
Marriages Mar 1937   (>99%)
Cheetham Marjorie Sills Lincoln 7a 1169
Sills John M Cheetham Lincoln 7a 1169
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