I will not promote. I am still building our MVP. But a potential user wants to use it right now. If you were me, what would you do?

I have been developing an MVP for a certain app, and when I start promoting it for alpha testing, one of the customer on my other business noticed it and told me how she can use it right now. She even wants to pay for it. Now, I was transparent to her that it is still in infancy, and I am happy for her interest, plus some extra feedback on how she want it to be like. But I don't feel like taking money from her yet because I know that my product is still in MVP stage, and will still release in 2 months. She told me she will wait, but given the nature of the product, she told me she want to start using it or, something like it or else it will be difficult for her. If it is you. what would've you done?