When your mom has mental problem

My name is Jonathan this woman in the video talking is my mom who has developed mental illness and doesn't want to be taking to the hospital and all she does the hole day is to talk angrily or aggressively to her self like she's talking to some one ..but wen I ask her why she's talking and laughing all alone why? And she will tell me to stop worrying her she's communicating with God and some angels in heaven and sometimes she tells me she's in a serious meeting I shouldn't Disturbing her..hmm it sounds funny but I know my mom is really sick but she doesn't accept that fact and doesn't need help now I don't know what to do .