Given you've already breastfed her for 10 months, if you're not comfortable getting the jab and continuing to breastfeed, it makes sense to prioritise getting the jab. Then, she's already had the benefit of breastmilk for 10 months, and her mother reduces her risk of dying. That's not a bad setup.
You have to weigh up the pros and cons and the risks - if you're at higher risk for Covid, is that a more critical factor than the health benefits of breastfeeding DD for longer? Probably.
You don't have to explain your reasons for wanting to continue to breastfeed here, but I would encourage you to reflect on those and if those reasons really are a deal-breaker. Formula is still healthy, you can still have snuggles and bonding time with your baby, and ultimately, your baby is not going to remember how long she was breastfed for, but she will have a lasting memory of growing up without a mother, or with a mother who never recovered fully from long Covid.
I suppose if you're limiting your contact with the outside world anyway, you may feel your risk of catching Covid is reduced, so breastfeeding still takes priority. But you're going to have to compromise on something, so lots of things to reflect long and hard on.
It's so difficult - everything is always tested on adults with no medical conditions first. The vaccine might be perfectly safe for breastfeeding mothers, but there surely won't be that much data available yet to prove it. Either you take the leap of faith with the vaccine, you become a hermit, or you change your breastfeeding plans. They're all perfectly viable options and I wish it was easier for you to know what makes the most sense for you and your DD.