She could play in Harry Potter as Narcissa Malfoy!
I think it would be a good idea. She is a Brit, so she would be hired, plus, she could at least be with her partner (although I am not the hugest fan, I am a romantic...).
For those who dont know, Narcissa Malfoy is Draco's mom and she is married to Lucius. I think its an interesting idea and I hope that they at least let her try out. She certainly could pull it off nicely! ;)