What's "in your prayers" mean?

Native speaker’s answer
Rebecca
Here they're implying that when this person prays, their dad is with them. Metaphorically or spiritually. This phrase is often used by religious people to express sympathy, a little different to here, especially when someone's experienced something troubling, sad, or tragic. Ex: I'm sorry to hear about your granddad's passing. My thoughts and prayers are with you. Ex: I always keep my friend in my prayers. I want them to be happy.