Hi, sorry I dont't have much experience in this area. My 18 month old is weaning himself off breastfeeding I wish he was still interested in breastfeeding and if only I had milk still but I have dried up completely. It is very painful though.. These days I just let him use it for comfort when he is distressed or tired.
It depends what you want to do, like whether you are ok with her nursing again since she shows interest in it (it seems she likes your milkies a lot!) or whether you want her fully weaned. It's totally up to you and what you prefer Either way you have done very well breastfeeding for so long!!