having my best friends baby

in the past 7 years my best friend has been pregnant 5 times each child passed first baby born in December 2010 wasn't suppose to be here til april2011 she had a hole in her heart then her son was full term still born she recently list a baby in feb2017 in a uber accident an right after that not even a 2 months later she pregnant again but jus last week she was told her baby girl heart stopped ....I feel horrible an I wanna have a child for her we have talked about it but I jus wanna take the right steps