Why doesn't my rose hair tarantula eat anymore?

There are no other symptoms that i would think she's sick, but she just wont eat. I put some krickets in her tank, she's had water in a sponge like they say to do, and she still wont eat. She used to eat like 3 crickets a day, but now she wont even touch them. Could she be bored of them or what? please help!