As usual, there is so much which is unclear here.

Concerning the 'not listening' - as I've found no Intro from you and you have no details in your profile, the language question is the first thing which came to my mind.
How long have you been here? Did she understand German before she started Kindergarten? Does she understand it now? Does she get tired when listening to German?
Most people find it exhausting and 'switch off' when they've had enough.

Re hyperactive - I'm not saying the Kindergarten teacher is one of them, but many folk use the term for a child if they themselves cannot hold the child's attention.

However, that said, loads and loads of children here are receiving some sort of extra therapy; if there are options for things which might help her, I, too, would go along with it.

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Longbyt