Its unnecessary to pay for her room and more fool anyone who does. There are thousands of really talented make up artists around Ireland that do wonderful work charge less than Michelle does and I would imagine are far nicer to deal with. She is too big for her boots.
Mine came to my hotel and was there for 8am. She stayed for the duration needed, I ordered her lunch to the room, she had coffee etc and it was all added to the room bill paid by me. Same for any of the weddings ive been part of the bridal party.