Say bye bye now.

Red flag. Dump her. I was a single parent for a while and if a guy I was dating seriously had said that to me, I would have asked, "You're kidding, right?" And that would have been the end of it. Likewise, my current husband dated a woman before me who was offended that she couldn't visit overnight while his daughter was with him, as per the morality clause in the court ordered divorce decree. Needless to say, it didn't last very long after that. I once told my husband (before we got married) that how much he loves my kids made me love him even more. His response was, "You're a mom, that means you and the kids are a package deal. If I wasn't willing to love them, I'd have no business dating you." THAT'S the attitude a significant other should have about their partner's children.

She wants kids with you but expects you to abandon your own? That’s one of the most selfish things I’ve ever heard

You mean ex, right? Run fast.

Tell her you plan to put down your old kids to get them out of your way. If she doesn't object, run like hell!!!

You picked her for her brains and her empathy?

Well hopefully you ended things right then.

Red flag

Her question must just be worded poorly. Maybe she's just asking about getting a bigger place to handle a even larger family.

Your username checks out.