Does the presence of pictures in a house prevent angels from entering, is it permissible to keep them on a device instead of hanging them, and is the husband sinful if he keeps old pictures of his unveiled wife in the home of her disbelieving parents, given his wife's refusal to dispose of them?

Dealing with a wife who keeps pictures should be done with wisdom and patience, so as not to rush into a matter that could lead to a greater corruption. The pictures must be secured from access, and the wife's faith strengthened so that she initiates tearing them up herself. If that does not succeed, she can be persuaded to copy the pictures onto a computer and dispose of the originals. If this leads to greater harm, then denouncing it in one's heart is sufficient.