Your daughter could be acting like that at the breast, because she is teething, or ALSO because at this age, they become more aware of their surroundings and simply get distracted, thus "seeming" to be uninterested. And, she isn't exactly "sucking" at the breast...THUS, she is hungry later within 2 hours.
(side note: when a baby is teething or about to, it often seems like they aren't interested in nursing...both my kids behaved this way due to teething, at about this age).
I would check to make sure her "latch" is proper and she IS getting milk and swallowing it. She does not seem to be. To me.
It does not necessarily mean she is "weaning." Many times, a baby has spurts of 'phases' like this... but it is only temporary. Push through it. BOTH my kids acted like this when they were teething. Nursing for only 5 minutes is NOT efficient nursing... so I would check with a Lactation Consultant.
ALSO, in conjunction, she may be going through a growth spurt...thus she is hungrier more often (this is called 'cluster feeding'), but if she is not nursing effectively, then she will not intake enough, then get hungry quickly, again, Thus, a vicious cycle...
Keep in mind, that breastmilk production is supply and demand. Direct nursing is best for keeping up supply. If you pump, in lieu of direst breast nursing, your supply will get affected.
Not all kids take to a bottle. My firstborn refused. My second child did no problem.
I would wait until weaning.... and besides, for the 1st year of life, a baby's PRIMARY source of nutrition is from breast/formula. What if your daughter never accepts formula or a bottle either? That is the conundrum.
But, treat each child different. Each baby has different needs and levels of acceptance or refusal. This is normal.
You don't need to wean both at the same time... unless YOU ARE SURE 100% that you want your breastfeeding to stop, and your supply.
Perhaps also, try nursing your daughter on the other boob, instead of the one you usually use. SOMETIMES, this can make a difference. (sometimes, each breast is different, and a baby will prefer one side to another). AND, you can also nurse EACH baby on BOTH breasts per session... you don't have to only use 1 boob per child. This can also increase your supply. My Doctor always told me to use BOTH breasts, per session, when nursing.... but since you have twins, then perhaps stagger their nursing times.... this might be an alternative.
All the best,
Susan