What do you think of this name?

I simply wouldn't do it. Very pretty name I will say. But once she's born you will remember your friend everytime you say her name. There's nothing wrong with remembering but it would be difficult for you especially since the death was recent and when she's old enough to ask you about it, she might not appreciate the reasons for you naming her the name she was given. I'd keep Lynn as a middle name because I don't think Bridget is a good middle name name if you know what I mean.