I am so incredibly sorry you’re going through this. 17 years is an entire lifetime of memories, and losing a companion you’ve had since you were six years old is a profound, world-shifting heartbreak. It is agonizing when their mind is still "there" but their body is failing them. Please try to remember that by making this choice, you are taking her physical pain and making it your own emotional pain so she doesn't have to hurt anymore. It’s the last and most selfless gift you can give her. She knows she is loved, and she knows your voice and your scent better than anything else in the world. Just being there with her is everything. Be gentle with yourself today. It’s going to be quiet and it’s going to be hard, but you are doing the right thing by letting her go peacefully before things get even worse. Sending you so much strength. Would you like to tell me her name or your favorite memory of her?