What is the ruling on a woman keeping semi-naked pictures of herself that no one but her husband sees?

It is not permissible to keep this picture, due to the possibility of it falling into the hands of someone who is not lawful to look at it, in addition to the disagreement among scholars regarding the ruling on photographic images. Some of them have absolutely prohibited owning them, based on the hadith: "The angels do not enter a house in which there is a picture."