Sue.
Since you're new to Archion, please let me explain two very basic things about Archion.
#1 Archion does not have any provision to automatically search for names. That means all available historic church registers need to be searched manually by the Archion users.
#2 All Archion users have to do the search for records on their own. That requires the ability to at least recognize names (family names as well as given names).
#3 All Archion users who may run into difficulties to decipher the historic script are welcome to ask for Reading Aid.
How to do so is explained in this topic
Mit unseren Permalinks können Sie auf eine ganz bestimmte Stelle einer Kirchenbuchseite auf Archion verlinken, um im Forum darüber zu diskutieren oder Lesehilfe zu einem bestimmten Eintrag zu erhalten. With our permalinks, you can link to a very specific place on a church book page on Archion...
www.archion.de
And allow me to add: it is absolutely required to learn all those details which a record contains in order to be able to find other records pertaining to the person and / or the person's family.
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Given that a kind request for help -like yours above- is basically not going to work at all. I am really sorry.
You don't tell people where Caroline Müller was born ---- Permalink to her birth record is missing.
You don't tell people where the marriage "Schack - Müller" took place ---- Permalink to that marriage record is missing.
With the very limited information which you provide above, all "helping hands" being around here need to start right at "Adam and Eve" with any help they may be able to provide.
And that cannot be intended, I am really sorry.
(The good thing is that you start a new thread for this lady in order not to mix things up with your search for her husband. Thank you.)
Kind regards Vera