Thank you x but now we’ve got the seller offering to take her from us and sell on but not a refund of the money
How much do you trust the seller, and is there much money involved? Realistically I don't think you have grounds to send her back to the seller and demand a refund, so if they'll have her back it's as a goodwill gesture. From their point of view I can see that they've sold her and may have already used the money and it may take some time to sell her on (though at least it's a good time of year to be selling. From your point of view you'll be paying out livery if you keep her with you, become more attached to her & won't be able to keep her in work so she won't show to her best BUT by sending her back to the seller there is the risk you won't get your money back from the sale or it'll be a much lower figure - I assume they are offering at east a partial refund out of future sale proceeds? If they're just saying they'll have her back but you get nothing then I'd say no & sell on as a project from the field being very honest about why you're doing this.