Very few from those who swipe on dating apps are actually thinking about a serious relationship, marriage or a family. Mostly they use the apps to soothe their ego and feel that they are still desirable with a cost: hurting others. One can avoid to get hurt by staying away from this kind of apps. And if by any chance someone would really be serious and find what they want, they would cancel any online presence in the dating arena. Most of them don't. They keep dating profiles active while holding hands. Odd, but this is what people perceive as love now. I agree with making your life be complete outside of the virtual space. Serious people who know what love is about would not risk losing it when meeting it. I wish your friend a lot of healing, she will need it. Online dating feels like a walk in the cemetary lane where lost souls search for love in the closet of past relationship trauma. I would never try such apps again they only bring shallow people in someone's life. I agree there might be chances for gems to be there, but the exceptions are few. Most of the relationships end in turmoil, just like the one of your friend. Best wishes and hopefully she will find a man worthy of her love!
RE: Is Online Dating and Relations Healthy?