heartbroken

i am truly hearbroken.... friday i went in for an sonagram. i am 19 weeks my twins girls anslee and paislee shared a sac and placenta... paislee is doing great but i got the most devastated news i could get about my sweet anslee i was told she received her angel wings a week before.... she had went into cardiac arrest due to recehung to much nutrients... i am so worried about my paislee... please pray she will continue to do well and nothing happens and she is born healthly. I don't jnow if incould take if if something happen to both my babies