should i delete my cousins ex wife off facebook?

[TeamSabrina (If You Love Me...)]

so my mom and cousin both got into a fight because my cousin found out that she's still friends on facebook with her ex wife ( yes her, that's not a typo)

anyways, now they are in a fight and I don't want to deal with it. should I just delete the ex off my page? Her ex never really bothered to write me or anything but I don't want to be accused of anything and I don't want to deal with family problems as it doesn't have to do with me and I don't want anything to be my fault now...
and I know its only facebook but my cousin told my mom to delete her off facebook and my mom never did, and she told me to also but my mom told me not to delete and I just don't want to deal with anything coming towards me even though it likely won't..

[bunnyONE]

Geez, this social site remains the SCOURGE of society and you people who are "pasted" to it to live your lives...

Yeah. Get rid of this person. Don't be a part of it. It has NOTHING TO DO WITH WHAT YOUR FAMILY DEEMS RIGHT OR WRONG, THIS IS ABOUT YOU!!! GET IT? HOW YOU FEEL AND THE PAIN IN THE DERRIERE ITS CREATING FOR YOU. Treat it just that way as in? Standing up for yourself and having a spine dear.

Grace

[Patrick]

If they had kids then no. No kids then yes, delete.

[Kurt]

Will someone please shoot me?

[tehabwa]

If you have no reason to want to keep the ex, why not unfriend her? I don't see a down-side.