What does it mean girl was texting me everyday, then suddenly goes quieter?

Anonymous
This girl and I became very close recently. She was texting all day everyday for like 6 weeks. We when out together. She would say I'm a great guy and send me red love hearts, x's and smiley faces. She said she was scared of losing me and that she feels safe with me. Suddenly she has gone quieter, taking longer to reply and shorter responses. This has been going on for a week now. However I decided not to message her for 2 days then she sent me a sorry message for been quiet and hoping I was well.
What does it mean girl was texting me everyday, then suddenly goes quieter?
3 Opinion