That’s great research but none of the data will tell you or your partner whether they work for them.
I would urge you both to go to a shop and make sure they fit your partner’s hands and face and that they are easy to use. This would also allow you both to try their pre-loved binoculars which can represent great value for money.
For interest - I have a pair of Hawke Endurance ED pocket binoculars that were immediately comfortable but I still spent a couple of hours choosing (£129) they’re a double hinge design and my partner just can’t use them and we can’t work out why - good job they weren’t a gift !
Or as an alternative why not make it into a great excuse for a good day out ?
Lots of RSPB reserves sell binoculars (as do WWT and some County Wildlife Trust reserves). The RSPB have their own brand binoculars you can field test, with no pushy sales chit-chat (not that I have experienced pushy sales at any optics shop).
Many reserves have "optics days", for instance my local RSPB reserve in Cheshire has an optics day, organised with Viking Optics in a couple of weeks.
also, Opticron run regular open events see this link
Good Luck and enjoy the experience