Where Are the Decent Guys?

My sister-in-law is newly single and she is in desperate need of some help!

She needs to know where she can find a decent guy.

She tried dating sites like Tinder (which I told her was mainly for hookups), but so far, she's only met losers there.

In one week she was stood up three times!

I told her that she may have to pay a dating site like Match or eHarmony to get quality guys, but what do I know since I've been married for nearly 15 years? I've never experienced this new dating scene.

Where can a single middle-aged woman find a decent guy?