I am one of those women that think people talk too much. IMO,As soon as a woman starts bragging about her man, you can bet some other woman will start wanting what she has. Maybe she believes that as well. As long as she isn't denying you, I wouldn't see her lack of snap chatting your time together as a bad thing.

Shake it up~ surprise her with something fun and let her know you're feeling a bit neglected and want more fun with her. She could be feeling the same way but thinking the alone time is what you want.