Considering the multiple, umm... shall we say "issues", you have to deal with here (lol) I would vote for a mini kit from Cignot as well. And she gets to pick her own battery & LED color (and auto or manual) for each battery in the kit. It's a nifty option. Since it sounds like Mom isn't all that convinced - and she's a pretty light smoker, she could get away with as little as spending $35.00 on a 2 battery 510 kit at Cignot. It would be an atomizer/cartridge setup. But for a lot of light smokers that's all they need or want even. Since it sounds like Mom isn't all that convinced - and she's a pretty light smoker - she could get away with spending as little as $35.00 on a 2 battery JoyeTech 510 kit at Cignot. It will also come with a 5 pack of either empty or pre-filled carts. Again - her choice.
Did you say menthol? (Can't recall.) The DK (Cignot list them as Boge) NPort is quite good - strong - and a reasonable resemblance to a menthol cigarette.
And there are options at Cignot too. Vicki has the "XL" 510 batteries if she wants longer run time. There is also a 510 tank kit there as well. But that would mean Mom, cough cough - you, needing to walk her though the ups and downs of a tank setup.
If you wanted to turn her onto cartos instead keep in mind that these mini batteries can't be used with LR stuff. SR cartos only.
And yup - Vicki @ Cignot will help share your burden. Honest! She responds to e-mail from customers 8 days a week. Even those "I have no idea what I'm doing!!!" hold my hand please e-mails. Can't say enough about their customer service.