My mother in law is the same way. She now has 3 ego batts and 5 clearo's that we've either bought or passed down to her. We buy juice for her. We clean her tanks 1-2 a week and replace her coils when needed. She vapes when she comes over, but she also will still smoke. Mrs Secutorum and I can't understand the vaping and smoking thing, but we haven't smoked for 60 years either.
We've chosen not to push her, but to enable her. It's her choice to make. We're going to make it as easy as possible for her to vape rather than smoke if she chooses to. We obviously have a vested interest in her and her health, but I'm not going to get preachy or jerkified. That's disrespectful. We love her and want the best for her. And we'll be there for her when she's ready.