Whats causing her bruising and pain in her legs?

I have no idea whats going on in the legs but it sounds like an internal medicine or a hematologist should be referred to work her up

In order to comment on this problem, more information is needed including pictures of her legs and breasts.  What type of implants does she have?  What is her age?  Has she seen her primary care physician?

Bruising and swelling is common in the chest area after this procedure, but because you're having it all over I would make sure you see your plastic surgeon to make sure nothing else is going on.

She should be seen and examined.  These symptoms need to be evaluated.  Both a primary physician and a Plastic Surgeon should review her medical history and examine her.

I can think of no possible relationsip between her implants and her current concerns with her legs. She should have a medical evaluation for other more likely causes.

Is otherwise as stated is generalized symptomatology is unlikely to be related to her daughter's breast implants.  By virtue to consult an internal medicine specialist and a most concerned about a blood clotting disorder  or autoimmune disorder.  This sounds very serious and she should have medical attention immediately.

You need to go to your family doctor and initiate a major workup.    Stop all unnecessary medications.  See your breast surgeon.  This is a very concerning situation.   My Best,  Dr C