Litomerice archives seem to be having technical problems so I had a look on family Search and have found Anna Reichel's baptism, spelt Reichl here, but it tells you her marriage date to Vladislav Stadler ( 21 Feb 1923 in Piotrkow) so it's definitely the right person. You will need to log in to family search to view but it is a free site.
https://www.familysearch.org/ark:/61903/3:2:77TL-7D3Z?i=99&wc=3NCK-827%3A979674501%2C979702601%2C982385303%2C982386801&cc=1804263Anna Reichl born 11 March 1900 bapt on the 17th March. Address 177 Bahnhofstrasse, Bilin.
Parents marriage date 30 June 1896
Father
Franz Reichl , Catholic, glassmaker? born 27 Nov 1871 Auerbach house 22, district of Braunau, Upper Austria son of Karoline Reichl who was the daughter of Joseph Reichl a shoemaker of Auerbach and his wife Magdalena nee Maislinger
Mother
Barbara, catholic, born 14 Jan 1870 Vsenic 25, Pilsen district
Legitimate daughter of Wenzel Lhoták and Magdalena nee Burghart from Osek.
Sorry I can't make out Wenzel Lhoták 's occupation. There are several people on this forum who are really good at reading this writing though! His surname is Czech and his wife is probably an ethnic German.
https://en.m.wikipedia.org/wiki/Auerbach,_Upper_AustriaVsenic could be Venice, see
https://en.m.wikipedia.org/wiki/V%C5%A1eniceThere is a separate Czech archive for Plzen region but some records may also be on Family Search.org
Piotrkow, possibly this one in Poland
https://en.m.wikipedia.org/wiki/Piotrk%C3%B3w_TrybunalskiOsek, possibly this one , but there are several in Czechia
https://en.m.wikipedia.org/wiki/Osek_(Teplice_District)
In my experience marriages usually took place in the brides parish, so you could try Osek for the marriage of Barbara Lhoták 's parents.
It may also be worth trying the 1921 Czech census for Bílina in case the Reichl family are still there, also I did spot a couple of Stadler families there too, so they may have been there before the move to Poland.However it is not indexed, there is a lot of it and some pages are missing.
https://www.familysearch.org/ark:/61903/3:1:33SQ-GYTG-SS4J?owc=Q67C-G9S%3A226976301%2C226988101%3Fcc%3D1930345&wc=Q67C-P5R%3A226976301%2C226988101%2C226974303%2C227118901&cc=1930345