There is a practice referred to as "compassionate abiding" that can be helpful in these sorts of situations. It's similar to what scaredandconfused talked about. Here's a link to a description of the practice:
https://mindsetdoc.wordpress.com/201...e-abiding-101/
Also, family therapist, Kati Morton, has a video on her YouTube channel on the subject of intrusive thoughts. Perhaps something Kati has to say may be of some help. Here's a link to that video: