<human>: Can you succinctly summarize the text in 1-3 sentences?

I've been seeing this girl for about five months now. She has two of her own children from previous relationships. She knows that I want kids.

Due to a medical issue, she can only have one more, doesn't know if it's a guarantee that she can have another, and doesn't know for sure that she wants another one right now.

She doesn't want to be an old mom, and feels like she's getting too old to start over with a baby.

She's told me that she doesn't want me to stay with her because of what she means to me and miss out on having kids, because she knows how much I want them.

I told her that I want to be with her, and if a doctor tells her that she can't have anymore, then I'll be fine with it.  She shot that down saying that there is no reason for me to give up on having kids because she can't/won't give them to me. She doesn't want me to realize that I made a mistake in staying with her.

I don't want to lose her.  Yes, I've always wanted kids, but I've never felt this way about anyone before.  Right now, kids are hypothetical, they don't exist. Meanwhile, I have a real flesh and blood person in front of me who I care about and don't want to lose.
<bot>: SO doesn't know if she wants another baby and is pushing me away because she doesn't want me to regret not having kids.  She refuses to let me put my love for her first. Where should I go from here?