I have read that it's very likely to flare up after the baby is born but I did not suffer a lot. I was having some pain in my joints, and I felt stiff, but it wasn't as bad as I read about it being. They do give you anit-inflammatory and pain medication. She doesn't have to completely change her lifestyle, she should just eat healthy and exercise when she's not in pain. I don't know how bad it is for her, but if she can continue with the types of things she does every day, then I would suggest that she did. Too much exposure to sunlight could cause a flare, but she could just put on sunblock and she should be just fine. There is a small percentage; about 5% chance that her child may have lupus but it is not likely. I hope this info helps. God bless you.
I am 23 years old and was diagnosed with Lupus when I was seven months pregnant. I think that everyone should be more aware of potential causes of this illness.