I am in need of Stalkers sage advice.

Here's the setup. (And yes, a visit from SD28 always involves sneaky traps.)

Snooty, demanding, sneaky & mean SD28 is coming for a visit. She will be staying with us for a few days but she will be in our area, staying with friends for a more extended amount of time. Thank-the-heavens that she will be staying elsewhere for part of her time here. It took awhile but recognition that the red carpet is no longer being rolled out has dawned upon her. I used to cook for SD's when they were kids because you literally have to feed them no matter how horrible they are. I also keep a tidy house. Welp, I haven't cleaned guest room since last summer when YSD spent an extended 4 week stay here and then SD spent 2 weeks there. Do either of them bother cleaning? Of course not. I consider tidying before and after their stays to be DH's problem and apparently it's not important to him either. They don't seem to enjoy staying in their own squalor as much as when I used to keep things cleaned up. I will clean up (and disinfect) if we have other guests staying but recently we have had no guests other than SD's.

I expect DH will be at her beck and call for what she refers to as "quality time" aka excluding me, attempting to cause a rift in our relationship & trying to create drama to split us as a couple. It is like having a pesky fly around but not any real threat as she will go off and live her own life soon enough. During her visit I will enjoy a break from her AND DH.

DH is picking her up at the airport. I will refrain from joining in the pick-up. (Unlike when I was a kid and always warmly greeted my SM, as she did I, when my SM and Dad would pick me up at the airport.)

Here is where I need your help. Back in the good 'Ol days SD would storm into the house without bothering to say "hello" or "goodbye" to me. Now that Dh has mandated basic civility she will greet me in some shape and form.

I need suggestions for how to greet her and then gracefully bow out. I have no desire to chit chat but I also don't want to be discourteous. In the past I have said something like, "Hi SD, how are things going?" She doesn't give much of an answer but will then move on to an abrasive, pushy demeanor and ask me somewhat personal questions about my life that I have no desire to discuss with her now or ever. She is socially awkward so it's not entirely her feral upbringing or sneaky personality at play but also simple ineptitude.

How do I greet SD when she arrives?  How do I get in & then get out?!? Ideas, Suggestions, Thoughts & Prayers appreciated