Goat : Side by side comparison between Goat and Forager would suggest Goat is o.k. We have had discussion about Goat being bonkers good, but costing 2$ and a buy is so different from costing 0$ and no buys.
Pasture : It's pretty hard to evaluate VP scaling of this type in the dark. I suspect it's not a direction that's fun to go in.
Pouch : There's a general known card design principle that we've developed over time that, +buy can get stapled to anything and still be relevant, and then even if the card it's been stapled to is crappy, it's interesting to decide whether to stoop that low or not. So Pouch should work out okish.
Cursed Gold: Cursed Gold will not be bought. Players debate whether to even play Cursed Gold the second or third time. Paying 4$ to put it in your deck is another thing altogether
Lucky Coin: If you reach a higher level of play, this will never be bought. At lower skill levels, this could win games just because silvery strategies are easy. I think it won't improve your play experience to make a full stack of these, but that doesn't mean if you do it anyway the person who buys these will never win.
Plunder: Plunder is probably fine. I suspect even if it's broken it's broken in a cute enough way, I doubt you can ignore all the other 5's and still win. Maybe you can when Smithy and Envoy are on the board, but I think Oracle wouldn't be enough. I wouldn't be surprised to be wrong.
Patrician: This is like, definitely fine, go for it.
Emporium: This should be pretty fine too, it is too similar to Peddler in incentives and impact to be terrible.
Settlers: Definitely fine.
Bustling Village: Definitely going to turn out okay.
Keep in mind your other options:
Buying expansions designed for different skill levels, if you are not completing your collection with these (there's no buyer's guide anywhere in the box, but Intrigue is designed for beginners, Seaside is somewhat basic due to being an early set, and Hinterlands was specifically designed to feel kind of like a base set, even though it came much later.)
Printing out sweet fan cards that have a low complexity.
Getting your hands on low complexity promos like Walled Village, Envoy, Disassemble (that's not it's exact name, it's super new, forgive me), or Governor (depends on what style of complexity she dislikes).