Wife won’t pray with me

I’m very religious and my wife isn’t. I asked her to convert when we married and she did but she doesn’t act like it. She doesn’t act as the women in my culture do and doesn’t really make an effort to. I ask her to pray with me and she tells me that her relationship with God is private and she would like to only pray alone. When I ask her to pray for me and say it out loud, she says no. This causes a lot of arguments because I need a prayer warrior to help me through the things I haven’t been delivered from. What’s her problem?