Lilli Schiffer

Both the birth and marriage records say that she was adopted by Julius Dub and Hermine nee Winternitz. Hermine and Emilie Dittrich were sisters.

Birth: 239 ČESKÁ LÍPA (o. Česká Lípa) N 1853-1937, 1946-1949 (172/246)
https://vademecum.nacr.cz/vademecum/permalink?xid=5c532f13-1863-4c8...
The comment in the last column says the adoption by Julius and Hermina Dub was approved by the district court 15th December 1925, the adoption contract was confirmed and the adopted girl is to use the surname Dubová. 13th February 1926 is the date of this record.

Marriage announcement: https://anno.onb.ac.at/cgi-content/anno?aid=ptb&datum=19280807&quer...

Marriage: 990 LIBEREC (o. Liberec) :O 1924-1949 (12/46)
https://vademecum.nacr.cz/vademecum/permalink?xid=c7b1b890-4286-4df...

Death: https://www.holocaust.cz/en/database-of-victims/victim/120959-lilly...
Born 08. 01. 1895
Last residence before deportation: Dvur Králové
Address/place of registration in the Protectorate: Dvur Králové
Transport Ch, no. 26 (17. 12. 1942, Hradec Králové -> Terezín)
Transport Cr, no. 1421 (23. 01. 1943, Terezín -> Auschwitz)
Murdered

Death: http://db.yadvashem.org/names/nameDetails.html?itemId=10499828