Is this a sign or am I crazy...

My husband was hit by a drunk driver on his bike and has been on life support for 3 days. We got married not even a year ago and I've been crying non stop. Everyone thinks we should just pull the plug but I will not be responsible for my husband dying. I will never be able to live past that guilt. Something very strange happened to me last night and I feel like I'm just gonna be judged and called crazy. I was outside smoking a cigarette and it was late. Some boy, maybe 6-8 was walking and stopped by my house. I didn't know where his parents were. I just waved. He said three words... "Let me go." He said it very calm.... I was freaked out and just said what? And he said again "Let me go." And he walked away. I swear to fucking God as he was walking away it seemed like he disappeared into nothing. I called my mom crying and she said I'm sleep deprived and that's probably some sleep deprived hallucination I had and I need to sleep. I have barely been sleeping. Am I a sleep deprived crazy lady or us that a sign?

Edit: Holy fuck I just realized that this morning I had his phone and I decided to listen to his pandora to feel closer to him. The first song that played was this is Gospel by Panic at the disco... If you don't know that song the main chorus is "If you love me let me go." I never put those two things together until now. Idk if anyone has every been through... If you have... How did you make the right decision...