Sister Drama (opinions please!)

Okay, I'll try to sum this up. My sister has always been competitive/jealous of me. I continually try to make her like me, get her thoughtful gifts, compliment her, downplay my life... But I've accepted (after a recent blowup) that it's going to be a permanent dynamic. She sent me a long text about how she's sorry for her part in it (even though I did literally nothing) and that she loves me. I however know that I've bottomed out with the emotional abuse and I know that I just have to somewhat cut her out of my life. Not entirely, just not host her at my house, or invite her to frequent play dates Etc.. Should I communicate that I love her but I don't think we're meant to have a strong friendship? Should I spill the reasons for why I feel this way? Or should I just accept the apology and just stop having her over? I really don't know what is the more mature/ healthy approach. We're both pregnant so I want to protect us both from unnecessary stress