It seems to me, she ¿fails to meet her responsibilities?/can't cope with .../can't keep serving ... in the main hall.
The thing is не справляется doesn't necessarily require an object (с чем-то) if the speaker and the listener both know what it's about, unlike its English counterpart (If I'm not mistaken).

Можно контекст?

управляющий был в главном зале, и заметил что уборщица медленно работает и вот он сказал этого

Does any of the options i gave fit?

l was about to thank you and here we go, your coment came up 😊it was helpful )

NP. We'd be grateful if you as a native provide your translation for us to learn something.

Manager was in the main hall, and noticed that cleaning - staff was working slowly and then he said this

Thanks, but i meant the sentence in question and especially не справляется)

l believe she can't manage / handle the main hall

👍