Heather, people will disappoint us and leave us, but there is one who will never leave us alone. That's Jesus the one who died at the cross for our sins. He has send us the Holy Spirit to comfort us, and guide us, allow it to do so in your life. This is not the end, but can be a blessed new beginning and a better life for you, if you allow it. Take your focus off Steven, and put it all on Jesus so he can work in you and in your situation, even to do his work in Steven too.
Lord allow Heather to see clearly, and take this torment away from her, which is blinding her from all reality. Let her see you may have planned something better for her, and she is too blinded to see it, or to allow you to do what you want for her life. Take away all her hurt by healing her broken heart, and giving her your peace, comfort, and the strength she needs at this time in her life and to keep trusting in you. I pray this in the precious name of Jesus Christ, amen.