Mom wants to go shopping and kids (with the dad)... not really? No problem! I can look after them. We can split for a few hours, I take the non- shoppers for a tour (sightseeing, cycling, fishing, hiking, hunting for minerals... whatever they like! Check the list of TOURS , SIGHTS & ACTIVITIES- redirection) with my van and later then or on the next day we can conquer a medieval castle all together! That makes everyone happy. How about that?
And actually kids can also enjoy some shopping with you as well... so you can possibly consider extending your stay in Bolesławiec by 1 or 2 days.