<human>: About two months ago my mom started receiving texts from an unknown sender telling her in a roundabout way my dad cheated on her.

At first they would give no details or say anything other than "the truth has to come from him". Of course this prompted a fight between my mom and dad.

It's been two months and the texts haven't stopped. My mom has attempted to block the number several times, but they keep changing it just to send her more harassing messages.

Now Mom won't stop texting them back and most of the time they just insult my dad and tell her to 'stop being so blind to the "obvious" truth" which they seem to be weirdly reluctant to just come out and say.

The problem now is that she goes out of her way to make him miserable every day and doesn't care who is around. I have repeatedly comforted my brother(14) and sister(19) after mom accuses dad of cheating in front of them.

Both of them are starting to resent her and neither of them want to be home anymore. My dad just walks around with a broken look on his face and offers meaningless platitudes.

Two days ago i blew up on her after she started ripping into dad on his birthday...in front of my little brother and sister...again. I told her she was making everyone in the house resent her and hate being home. We haven't spoken since. I hate how damaged our family has become because of one cruel person hiding behind a phone.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Anonymous texts are causing my Mom to suspect my dad of cheating and now the whole family is on edge. At a loss of what to do.