Hydrocephalus

I'm 21 weeks and just found out my baby girl has hydrocephalus. I'm heartbroken and lost and have no idea what to do. She has a 21mm head full of water. Everything else appears normal and we are waiting to hear back from the genetic testing to see if my SO or I carry any bad genes.  Has anyone been through this? My dr recommended we have a date set up for an abortion bc we are so close to deadline. I want to believe that my baby can pull through and perfectly healthy but my SO is a bit more realistic. Please help with any doctors or stories!