I was doing customer interviews and now a potential user wants the service. What do I do?

Long time lurker, first time poster!

I'm validating a professional photography on demand service in Chile.

I builded a 100% functional mvp with no code tools (site on notion as a cms, form with google forms, chat support with crisp, cloud storage and preview with google drive) and I was asking for feedback on a local entrepreneurs facebook group.

The site is filled with stock photos that are on my level of execution, but of course, this demands resources (backdrops that I don't have at the moment, props and such)

The thing is that a potential user loved the idea, I interviewed her and asked for money to really test it out.

She replied with "send me some of your pictures and I'll try it out"

And now I don't know if I should send her the few real pics that I have or to tell her that I'm just validating the idea and I need some resources to get everything perfect.

What should I do?

Thanks in advance!

Btw, you can see the project in https://lenndi.com/