Please pray for my family

Our family just got back from a fun 4 days in San Diego last night (Saturday). This morning (Sunday) I got a call that my mom was found slumped over the steering wheel of her car (she lives in North Carolina). She was taken the hospital and they tried to stabilize her. They were not able to keep her stable and she ended up not being able to breathe on her own. They put her on a ventilator and transferred her to a different (larger) hospital in Winston-Salem, NC. They don't know what happened, but the MRI came back clear (meaning, she didn't have a stroke). She is currently still in the ER on the ventilator and struggling to stay alive. I am leaving tonight with my sister Wendy to fly to North Carolina. We arrive in the morning (on Monday morning). Please keep my mom in your prayers. This whole thing is completely unexpected as she is/was perfectly healthy.