I wish I could answer those questions but while I can find her in Frederiksborg in 1859 (birth) and 1873 (confirmation) and in Kobenhavn on the 1916, 1921 and 1925 census records I couldn't locate them between 1873 and 1916 other than the mention in her father's probate in 1901 that says she was married to August Julius Hammer. They could have been married as early as 1879 and any children would have been long out of the household by 1916 (though I didn't see any names listed in Anders Jensen's probate that looked like they might be Gyritha's children) And I don't speak Danish - only the bits that I've learned by doing this, I can usually figure out the parish records, but the probate is beyond me. I did find a couple of other tidbits for you - August Julius Hammer died Sept 24 1921 in Kobenhavn and Gyritha died January 2 1927 in Kobenhavn.
The records I've found re the family:
Anders Jensen birth/baptism record
Anders Jensen death record
Anders Jensen skifteprotokol (probate)
Juliette Caroline Olsen birth/baptism
Juliette Caroline Olsen death record
Anton Julius Jensen birth/baptism record
Gyritha Maire Jensen birth/baptism record
Gyritha Marie Jensen confirmation record
Gyritha Marie Jensen Hammer death record
August Julius Hammer politietregister
Gyritha & August Hammer 1916 census
Gyritha & August Hammer 1921 census
Gyritha Hammer 1925 census
They are -of course- all handwritten in Danish but if you are interested in any of them let me know and I can forward them to you.
...and a thought re finding out what else the probate record might say about them would be to post a copy on the general Denmark message board. There are some very kind people who do speak Danish and will occasionally translate bits of records for you.