UPDATE PARENTING ADVICE PLEASE!

Ok. So I have 2 children and my SO has 2 as well. My question is my SO's daughter has this picture in her room of her mother and it's a 5 generation picture of all the females on her bio moms side. I, personally, want the picture to go to his ex wifes house. I don't know if I'm wrong for feeling this way so i just want some opinions. I have brought it up before and my SO doesn't see the problem with it. My ex is not involved with my children so obviously we have no photos of my kids' bio father anywhere. I just think it should be at the bio moms cuz it's her family and I dont like to look at her. (the bio mom) I try my best to get along with her but they had a sort of ugly splitting soooo I dont know what to do. She always shit talks him to the kids and blames him for everything that went wrong in the relationship and it's bad enough I have to look at her when she drops the kids off let alone every damn day and night when my daughter goes to bed. (My daughter and his daughter share a room) By the way we have been together for 3 1/2 years now. We just moved and I'm torn on whether to rehang it and just let it go or confront my SO about it again. My opinion on pictures of parents being in the kids room at the other parents house is if they are deceased only. I wouldn't want my picture in my kids' rooms at my exes house if he were involved in their lives. That's just odd and rude to the new wifey. They are there to spend time with the other parent. It's not like they wont be coming home in a few days. Right?

Sorry this is so long. Looking forward to the advice. Hope I get some.

She's 12. And no one said I was angry. I just want some advice. That's all.

Also. His 2 children live at the bio moms full time. We only see them 6 days out of the month. NOT in a row.

UPDATE

Ok. Since all of you have the same opinion and clearly I am wrong I will hang it. Also to those of you who actually read all of it and THEN commented politely, thank you. To those of you that didn't read it all and commented or for those of u that were rude as fuck, please next time don't bother commenting. Its a waste of my time and yours. I KNOW. So rude right. Well none of u rude ass bitches hesitated. So why the hell should I. Have a nice day. Dont forget to change your tampons!! 😃