Sandbox relationships are very important for children. After all, it is here that kids get their first peer interaction skills, learn to defend their interests, understand the wishes of others, negotiate, give in, and so on.
Of course, in the playgrounds of disputes, quarrels and conflicts can not be avoided. But this is an important and necessary part of growing up.
After all, the experience of resolving disagreements acquired here teaches children the flexibility that is so important for adaptation in life.
Unfortunately, you did not indicate how old the children are. But, probably, the son of your friend is still at that age when the moral categories of good and evil are not formed, and, most likely, he does not yet understand the feelings of the other child.
Therefore, in the fact that the boy takes away toys from your daughter, there are no signs of selfishness or anger. Simply, he has not yet learned to distinguish the boundaries between himself and another child. In addition, young children love to imitate their peers, imitate the same actions.
This is due to the peculiarities of the brain of kids. That is why a child who reaches for someone else’s toy, first of all, needs to be taught to control his impulses.
Therefore, children need adult help to resolve such difficult situations, taking into account the interests of each party to the conflict, for which it is important to be close to the children and teach them alternative behavior.
In adults, there are different views on how to do it. And this may be the cause, if not a quarrel, then a misunderstanding between the parents. Of course, you decide whether to continue to communicate with your friend.
But it is obvious that moms whose children behave inappropriately, from your point of view, way, you will meet many more. To communicate or not “in the sandbox” with such moms?
The answer to this question, probably, in each particular case will depend on how such interaction will contribute to the development of your girl. And if you do not see a good reason to spoil the relationship, then why not together laugh at the misunderstanding that arose?
Surely you will find other ways to relieve tension.