K.O.
I would take that as a sign. Pediatricians recommend breast milk for one year. The WHO recommends two years. But at least six months of breastfeeding would have a great impact on her health. If you are still intent on weaning you can have someone else other than you try to give her a bottle while you are gone. Or maybe try different bottles and nipples. They sell a bottle called Adiri that feels more like a real breast. I used Avent nipples on Medela bottles.
If I may ask why do you want to wean her?