If you live near your mom, this could be a great chance for you to explore stuff also.
If she's not taking the plunge herself and instead being led to it by you, she may need more time and options to explore. Get a few things you think might work for her. Some transition with tobacco flavors, some with fruit, some with other savory things like tea. Leave your backup kit with her for a bit. Find out what she did or didn't like. (Too finicky to refill, tastes like poo, too tight, too loose, too big). If she's willing to give it a try, don't worry about the quitting part just yet. If she tries this and that, she'll learn what it's about. Hopefully, in a little while, she'll ask you "Is there something that's kinda like that last thing, but a bit more XYZ, or with the thingy that the other one had?" In the process, you might end with some spare juice and tanks. Not all bad.