Met this girl online, she's absolutely brilliant we have clicked straight away, we have similar views on life and she's so much fun...any way...we met, all was going great, went back to mine and spent amazing night together

Now this is where it gets worse, next morning we both wake up and she tells me she's ready for round 2, I'm not...I'm soft as a marshmallow so I said to her I can't get ready on command and maybe we should begin with turning each other on and getting in the business, she then replied that "does this not make you turned on?" And pointed at her body...and let me be honest here, she's hot! Like really hot! I said to her it does but I can't get hard on command and she replied all her previous sexual partners were always ready...eventually i got myself ready and we went to town and was great again

I want to see her more and her not taking care of me would definitely be a deal breaker

How could I say or what I should do to tell her I need to get turned on too rather than be ready on command?