Thank you GilesMM and Catbert. Just for clarity:
If she gifts me $250,000 then she'll file Form 709, but won't owe any tax on that gift?
And, when I sell my house and gift her $250,000 then I'll file Form 709 and won't owe any tax?
She's let her required minimum distributions pile up in her money market account so I don't think she's worried about capital gains.
I honestly would rather she just loan me the money and then report the interest to the IRS, but we shall see. She's very generous but is making this harder than it needs to be.
Thanks again.