Do you think it's wrong for me to ask my mom to take down her wedding photo?
What will happen if she wants to leave it up?
I'll be disappointed and I'll end up leaving her.
That is a mean thing for you to do to your mom. You shouldn't tell your parents what to do. Her wedding photo is special and you should understand if she wants to keep it up.
But it's weird, I don't understand it.
It's a memory for her and you should just let her have it and stop thinking about it.