Mind delusion. Her for the same!

Hi This is about my mom. The thing is sometimes when she watch TV and some ad is coming then she thinks that this is some message conveyed to her, for example yesterday an ad was coming with background song as "manmarzia" then she started speaking "hm to krege manmarzia tum kya bigaad loge" . There are several similar instances. She also thinks if someone falls ill in our family or any electrical appliances stop working or anything wrong happens then this is done by our relatives or neighbours ( whom she dislikes). Sometimes she even says hurtful things to me (only me, with others like my brother, niece and SIL she never does it). She sometimes spread lies about me in our extended family and by doing this she has isolated me from many relatives.I am not able to conclude whether it's some mental condition or she just like to put blame on others. Please help me know whether i should take her to some psychiatrist and how should I convince her for the same