Here’s a way to pray for individuals when you don't really know the details of what's going on in their lives. It works for anyone. Use this Biblical language of Ephesians 3, or similar words of your own.
Hear my prayer for __(insert name)__, O Lord.
I pray that you may grant, in accordance with the riches of your glory, that he/she may be strengthened in his/her inner being with power through your Spirit.
I pray that you will dwell in his/her heart by faith, as he/she is established and grounded in your love.
I pray that he/she may have the power to comprehend, with all the saints, the breadth and length and height and depth of your love: to know this love that surpasses knowledge.
I pray that he/she may be filled with all your fullness, O God.
By the power at work within us you are able to accomplish abundantly far more than we can ask or imagine. To you be glory in the church and in Jesus Christ to all generations, forever, and ever. Amen.