I'd pay it all off. I'll cover all fees. It's not a problem.
And not asking for a donation. I completely am willing to repay.
This is a "loan" thread. I have honor and respect. It's the principle of the matter, I know.
You'll cover the $30 tx fee for your $10 loan? Then why are you borrowing $10? Or are you expecting this to confirm anytime soon? The mempool is really backed up at the moment and you'd have to pay a lot to get into a block within the next 24h.
Also, you didn't say when you'd pay this back or how much you'd pay back. Hard to say yes to something where there are no terms at all, anywhere.