Most ads isn't about manipulation, it's just about getting your attention and reminding you that this product exists.
Ads are the only way to reach her market. You could argue that search is a good one too (which is true), but sadly people have trouble paying to watch videos online, there's no way they would pay for a search engine. We are still not really high in the search result after a year of existence either and paying for ads is a good way to get people on the website (which I'm sure will help our position in search results).
EDIT: In case it's not clear, I don't believe she deserve to be higher than other escape room in the search result, we have actually almost no competition close to us and it's pretty much why she started that business. Simply that Google have no metric to know that her website has to be higher than another one, so clicks are needed to provide some.
She always asks people what they think of the experience once they are done and recently one even said that we are not visible enough. It's a pretty great feedback, we are lucky that's our main issue, but sadly ads are the only way to become visible to others.
Ads are almost amazing by allowing investment into market that people aren't ready to pay for but yet provide great entertainment, learning experience or a great service. Without ads, I probably wouldn't be the developper that I am today because the guy that did the great tutorial that create the passion in me wouldn't have time to works full time on them.