Wish she and I could just switch places

It’s really hard being there for someone who is always venting about wishing they weren’t pregnant and considering abortion when I’m getting constant negative pregnancy test 😞 my situation has nothing to do with hers so I don’t have any ill feelings towards her. It just makes me sad. I wish we could just switch places since my husband and I want a baby so bad and she doesn’t want one 😞I’m her closest person so every time she vents to me about how bad she wishes she wasn’t pregnant, I silently just feel sad. I don’t say anything because I don’t want her to feel like she can’t talk to me. I don’t think she even knows I’ve been trying to get pregnant. It’s very lonely being someone’s best friend but not having one for yourself to talk to.