The answer to this question depends on a few factors. The first is whether or not your cat is comfortable with her kittens being moved. If she is happy and content in her current location, then there is no need to disturb her and the kittens. However, if she seems restless or anxious, it may be beneficial to let her move them to a new location.
Another factor to consider is whether or not the kittens are old enough to be away from their mother. If they are still very young (under 4 weeks old), it is best to leave them where they are. Their immune systems are not fully developed yet and they are more susceptible to illness if they are removed from their mother's care. Once they reach 4-6 weeks of age, they can be slowly introduced to other people and animals and gradually acclimated to new surroundings.
If you decide to let your cat move her kittens, make sure that the new location is safe and clean. Kittens are curious creatures and will explore any nook and cranny they can find. Be sure that there are no harmful chemicals or objects within reach that could harm them. Provide a litter box for them as well, so that they can learn how to use it properly from their mother.