At this point she’s just being rude, though. It’s like, this is not a hotel, Erin. It’s also not your home. If Lu needs a freshen up, a baby bath is actually fine. My 5.5yo and siblings still bathe in a baby bath because we don’t HAVE a full tub, and they don’t always want a shower. If Lu was older and a baby bath WOULDN’T work, hospitals have shower chairs (OT or physio dept will supply), and other bathing equipment. If you have very specific disability needs that really can’t be catered to, a bed bath sometimes is just what you need to do. Again, not a hotel, not a day spa, not your home. You are still getting clean.
& I have a disabled child. I’ve been there. We do a sponge bath, fresh sheets, fresh pjs, and all is well with the world.