Headstone for Ashley Jenkins

On January 3, 2013 my son and his fiancé lost their lives in a house fire. It has been almost a year and no one in her family has gotten her a headstone yet. We have went and ordered one for her and the monument company is allowing us to make payments. However, after burying our son and then my father-in-law a few months later, we can not afford to pay for this ourselves. My son and Ashley left behind a baby boy. I would love to get the headstone paid for and get it up out at the cemetery. When you go out there, its kind of like she isn't there. Please help give Ashley a proper memorial!