oh my god,,u mean u are married,,? u have children who are 20-23,,even i m in that age group,,i cant imagine my mom leaving me n going away like that,,it would be sooooo painful to me,oh god! my mom is very good thogh she loves me,n i love her a lot 
i dont know what to anwer u ! im an indian,,n in our tradition most of us love n marry the same person,,have family n live with that person for the entire life!
There must b other peple too who break their marriage ,bt i m not familiar with such people! it sounds scary to me,,ur kids must be missing u ,crying for their mom!They must be scared in rainy nights sleeping all alone ,as now their mom will not come to hug them,caress them on their head n say ”dont worry my little daughter/son,,m with you,,dont be scared”! Or when they will be hurt by someone,they wouldnt find their mom to share their feelings with! So sad ! May god make everything right in your lives,,so that everyone is happy! Sorry to dissapoint u aunty,i know i didnt anwer ur question,bt m too emotional,cudnt stop myself from writing after reading that u have children,,n u left them,,as i love my mom very much,n a single thot of staying away from her scares me !
thank u 