It kind of sounds like she’s roping your friends into seeing your pins then trashing on them hoping your friends will take her side in hopes to change you. Women love changing men! It’s a fact of life. So next time it’s brought up go along with it, say ‘yes I know I’m a nerd and weird for liking such an obscure hobby but I’d rather be at home playing pinball than out at bars playing’. Hopefully a comment like that will resonate in that there are worse hobbies and worse things you could be doing.