My question involves criminal law for the state of: California

I was falsely accused of having an inappropriate relationship with a student -- I'm a teacher. The allegations were brought on by a student who told our campus officer. The allegations are not true. This student (girl) who made the allegations is obsessed and very jealous of the student she is accusing me of having an intimate relationship (male). The student in question is 18 years old. My student has came forward to me and told me that he was being harassed by the female student because she is jealous and under the impression that she is his GF. Anyway, I helped the student by talking to him and advising him to talk to this girl and be honest with her etc.

I am good friends with the students family -- his parents. I talk to the students mother on a regular basis. I am a family friend. My student would spend his lunch in my classroom (as did other students and teachers) because he did not want to deal with this girl and her jealously towards him. This girl was upset that he would not spend his lunch with him and was in my classroom. One that girl came in my classroom to tell me to leave my student alone or she will go to administration with rumors. I let administration know of her intent right away. However, she went and told our campus officer (who has a reputation of breaking the rules) that I was having an inappropriate relationship with my student.

These allegations came at the end of the school year -- somehow I was also accused of having inappropriate relationships with 6 other male students by this one girl student. I was put on a leave with pay for the rest of the year. The case was reported to police and a police detective is doing an investigation. Students were called and they all said that these rumors were not true including the student that I'm being accused of having a relationship with. I'm very close to the parents of my student and they have been supportive - I have helped this family tremendously. They consider me a close friend of the family. Since this happened I have not visited the family or anything due to fear of what is happening.

Obviously I was a mess at the time and communicated with my lawyer only. The detective called me to come down to answer questions at the police station. My lawyer called her back and the detective told my lawyer that she feels that the case is going nowhere because students are saying it's not true that unless someone comes forward with some incriminating evidence that it will go nowhere.

My question though is when will I know if this case gets closed? Or will I ever know? No evidence exist that any of these accusations were true at all. Now, if I hang out with the students mom (we are friends) will this be used against me? I'm close to this family and don't want to be afraid to see them when I have done nothing wrong? My lawyer said to move on with my life but it's hard. My life has been crazy since then and I feel like I have to change my life around due to students false allegations. Not to mention that students during school and staff were talking about these allegations and I'm being seen as a monster.