warrant???

location: MO, USA

basically, my friend texted me the other day and said she heard my name called in court and said i might have a warrant. i checked on case.net and didnt find anything except the thing from a ticket over 6 months ago. what happened there was that my dad took the insurance card out of the car i use and forgot to put it back and i got pulled over and ticketed, last time i got a ticket i was told i could email a picture of my insurance to the email on the ticket and there wouldnt be any issues, it worked then so i did the same here. i had a trip to europe, and when i came back my step mom had passed, in the flurry of grief funeral planning and reorganizing my life around school and my siblings, the court summons i got was misplaced since it came while i was in europe and no one in my family told me about it. my younger brother, 17 at the time and autistic was the one who got it out of the mail and it was only rediscovered about a month after the listed court date but i had already sent the email with my insurance into and the case number from the ticket. ive checked case.net since then and havent seen anything else under my name. what should i do in this situation? how do i resolve this without getting arrested?