i have no words

I had another post prepared for today but it's about 2:22 AM & I just got back from the Animal Emergency Room. My mom's dog & basically my dog too Lucy was having problems breathing this evening & it just kept getting worse so we took her in. They told us she was going through heart failure & that eventually her heart will die. 
They put her on some medicine to help push out the fluids in her lungs to help her breath better. Along with a lot of other medicines. 
Right now Lucy could use all your prayers. 
She was our very first rescue dog & she did not come from a good life. But despite her horrible past she is the happiest dog I have ever met. Not to mention the silliest, hence why her name is Lucy. She's our baby & we love her beyond words. She is a gift from God.  
I don't know why all of a sudden God threw this into my life...it's really hard to grasp....I am not strong when it comes to this kind of stuff, especially with my animals. i really have no words.