My new boss is stealing my hotel points

Any advice on how to handle this is appreciated - I'll highlight my gameplan below but would appreciate any feedback.

1. First day working together we didn't know where we were staying so she books rooms the afternoon of our stay at a Hilton and I figure we'll give my credit card and Hhonors for my room as we check in. The front desk clerk asks for my license as we check in and I also give him my HHonors branded AMEX and my boss says "Let me get this since you aren't set up to do expense reports yet." I'm annoyed bc I've expensed flight, parking, etc already and she knows I am getting set up by HR at that moment. I figure "whatever it's my second day it's no biggie."

2. Now I'm flying out to her city and she's STAYING IN HER HOUSE and she casually tells me on the phone today that she'll book my hotel close to her house. No real explanation why she would book it, and I didn't say anything. I know she's going to have me in a Hilton property with HER Hhonors number on the room and that she'll come to check in with me and do the same scam as at the Hilton last week.

How should I handle this? My idea is to hold my tongue and not try to give my credit card info when she's there at check-in, but to swap it out later and give the clerk my HHonors number. If she gives her card again she'll obviously know that I swapped it and took the hotel points, but I frankly dont care. I'm just worried that she'll book some "pay in advance rate" (assuming Hilton still offers these) so that she will presumably get the points too. But I think that since I'm staying in the hotel that supercedes her paying for it.

I feel like this kind of shite has been happening to me a lot lately and I'm determined to not blow up but to stay cool and handle this well.

Sorry it's so long but really appreciate any advice and commiseration in advance. The thing that really boils my blood is that we talked for hours on my first day bc of all the driving and I mentioned how happy I was to be traveling again bc it sucks to have lost all my hotel and airline status when COVID hit. Also she has me traveling out to her city on a Sunday afternoon and flying back on a Friday night which is so unnecessary and really pisses me off bc there's no reason we couldn't Zoom and do 2/3rds of this shite remote. I really think she's having me stay so long simply to get herself more HHonors points, and that if I would have handled the first Hilton situation better she wouldnt be trying this.