How to suggest a date when she's been painting and wants a class

The detail that matters most is "haven't found one that isn't 40 people and a tiny canvas." That is a complaint about the format, which means she has already thought about what she wants. She wants something smaller, maybe with a teacher who actually looks at your work, maybe on a weeknight when the studio is not packed. Notice that she is not asking for your opinion on painting classes. She is describing a gap she would like someone to help fill.

That means the useful read is that she is open to doing this with someone, and the way she frames it, possibly with you. It is still a soft signal. She may be thinking aloud. But the specificity of her complaint is what makes it actionable. If you respond to the general idea of painting, you miss it. If you respond to the small-class, real-teacher version she described, you show you were paying attention.

Also check the weekend detail. She paints at home on weekends, which suggests she has time and a settled routine. A weeknight class is probably a stretch she is willing to make, not a conflict she is trying to avoid.

A good invitation names a specific evening, not a category of activity. You do not need to know which studio has a 6-person Thursday session. You need a day, a rough time, and a reason it fits. Something like picking a weeknight that is early enough to be low-pressure gives her an easy yes. Her job is then to say yes to a shape, and your job is to be the one who finds the exact class if she wants you to.

The other move is to offer to do the legwork without taking over. Saying you will look at a couple of smaller studios and send options is generous and keeps the plan moving. Asking her to choose from two real options is easier than asking her to dream up a whole evening. Keep the choice narrow. Two options is plenty.

Once you have made the invitation, the ball is hers. Give her a reasonable window, usually until the next time you talk, before assuming silence means no. People with a hobby they care about often need an hour or a day to check their calendar and look at the studio. If she replies with a question about the class, that is a good sign and you should answer it directly. If she replies with "that sounds cool, we'll see" you can make one small follow-up that proposes the specific date again, then let it rest.

Stop after the second attempt. If she has not engaged with a concrete plan after two tries, the idea was probably a passing comment on her side, and pushing harder turns a nice idea into pressure. You can still mention the class later in a natural way if the conversation comes back to painting.