Desperate, Interesting or unique offer
She must be very desperate to make that offer.
Of course unless you have a signed contract with witnesses, she can always whine until you pay or call in security. A seasoned Spanish-speaking guy, looking Hispanic, took a girl out all afternoon for dinner, shopping, 10 fichas in HK (he claimed), then took her to the room. Before she took off her clothes she wanted him to pay. He was pissed off that she was so callous so he refused. She called in HK manager and security guys, 6 or 7 people were screaming, arguing heatedly in the hallway. I was with a girl a few doors down and witness a fierce verbal fight. The guy was shaken up, had to pay without screwing her, then went down to HK sulking, drinking with me hehe.
Last few months I have seen the rate girls going to the hotel slow down significantly, may be as low as 25% when HK just reopened after CoVid shutdown. Most of the hottest girls were just floating around the club, no fichas, no boom booms in hotel. The girls are hurting for business. They don't like to sit and drink with the guys when they could make 20 x the money for the same length of time in bed. 3 minutes into the ficha they would be bringing up the hotel question.
I would give them the standard Mexican offer and most girls would take it. Knowing the girls' dire situations, I usually give them good propinas. A wingman challenged a girl and got BBFS with a discount last week.