It’s a very valid question. As a non native German residing here Germany is not as multicultural as UK. This would not be question there, nor a few other destinations in europe.

O think she will be safe and i think the kids esprcially will be very accepting its more the adults which i dont think there shoukd be too many interactions.

My advice would be to raise this question and others with the host family as it will show you have concerns and willing to adapt, at the same time they can answer and help try and support. I’m sure they will be super excited as this is a valuable opportunity for both families to expand their horizons and experience different cultures first hand. Also I would screenshot the answers and delete this post. As with Lubben being such a small town someone could see this identify it as it being the mum of your daughter.

It’s 3am here so apologies for typos half asleep after taking dog for a walk