I search topic on PC, wife gets Ads on phone

So just now I'm on my laptop using Firefox browser searching for international money transfer. I stop to talk to wife about it, she's on her phone using Facebook App. We finish convo and she scrolls down on Facebook App and she suddenly has 5 different ads for Banks and Money Transfer. Different accounts, different computers, different applications. This isn't the first time. I assume it's because we're on the same IP Address.... heck I work in IT, and while …

accounts ads app applications banks browser computers down facebook firefox international isn laptop money phone privacy search wife