Should they photoshop out his ex-wife?

Should they photoshop out his ex-wife?

“I have been in a great relationship with my girlfriend for the past year as I’ve dealt with a nasty divorce. My ex harasses her and makes things difficult for us when we have custody of our kids.
My girlfriend wants her photoshopped out of the photos around the house with me and the kids.
I feel a bit weird about it, but is it the right thing to do? The old photos would be put into an album.”