pumping is different than a baby feeding.. you can feed your baby without a midwife touching you.. i had some issues with my first and had all these midwives giving different advice and very hands on (which teaches you nothing at all)
I have no idea what you went thru (nor is it my business) I would say leave all possiblities open.. bfing, expressing or formula in the end its what works for you two! I think everyone is different but i find the biggest thing for the let down whether pumping or bfing is relaxing! I cannot let down with the slightest feeling of being tense or nerves! Formula is not the devil, dont beat yourself up..

i also just want to kindly add that i cant see any reason why a midwife would need to help you with the breast pump so its a safe no hands option i reckon.. but more importantly look into pumps, ask around bout what people thought.. the hospital probably have their own, might be worth asking bout too.. something to bring up at a midwife consult and make sure they write it down in your hospital notes (as sometimes birth plans are forgotten, not read etc..) Also might be worth looking into a lactation consultant, they are absolutely awesome! (best help i got ever)

you can also relax knowing that if all is well you can leave the hospital shortly after birth.. you might feel like bfing at home rather than the hospital.

also another point.. do not underestimate the power of vagueness that comes with pregnancy, during labour and after giving birth

I sincerely wish you all the best!!!