Translation:The girl was sad because she could not find her mother.
The syntactic verb suffixes of Klingon, also known as Type 9 suffixes, can be grouped according to how they're used:
-chugh, -DI', -mo', -pa', -vIS
The subordinate clause may go before or after the main clause.
May modify either a noun or a verb (clause), and must come before the noun or verb (clause) it's modifying.
The relative clause, including its subject and/or object and any other arguments it may have, are treated as a noun phrase.
Puts a main clause into a different mood: interrogative (-'a') or optative (-jaj).
Turns a verb into a noun.
There is also a type-5 noun suffix -mo' with a very similar function, and when it is used, the noun carrying it has to precede the clause it is modifying. For this reason, some Klingon speakers have the same weird feeling as you do on the subject, and tend to front -mo' clauses.