Mom trying to make meals for me too but couldnt eat it..?

Hi guys. I am a vegetarian and my mom is trying to make meals that we can all eat as a family (They eat meat)...well she made this broccoli/rice cerole but it called for chicken broth....I didnt eat it and I felt bad because she was trying. (I didnt tell her why and when she asked why I was eating something different I just said it was late so I had to get to bed and had to study and wasnt that hungry). Has this happened to you guys???? What did you guys do????