Android reversing-can not see my loaded so file in the maps file

Question

During the APK execution the application loads SO file via JAVA loadLibrary API. The procedure succeeded and it ran the the SO code. Analyzing the /proc/PID/maps file of the process does not show the SO loaded file!

The SO file haven't unloaded or something like this! How is it possible?

1. I tried to Hook the loadLibrary API to see that it indeed loaded- Yes it is.
2. I tried to play with the application to see that that the functionality that uses the SO file is works.
3. I tried to hook some JNI functions of the SO file using Frida, but it can not find the SO file!.