She paid for a product, and it seems to be taken from her because the company does not want the bad PR to get out. they should have quietly given her the money back... but her lawyers see the 8-figure numbers for the company depriving her of the siblings anyway. Juries are mostly stupid.
She broke the contract in such a way as to potentially be damaging to the third party, and the sperm bank could be subject to damages.
No, she's not entitled anything back, and should pay all damages and all attorney's fees should all this go to court.