Vaginal Ultrasound At 7wks The Baby Had No Heartbeat

Jessica
I Have A Friend From Work Who Is 7 Almost 8wks Pregant She Is A Few Weeks Behind Me. We Both Had Vaginal Ultrasounds Last Week. She Ended Up Having 2 All Due To The Fact That They Could Not Find A Heartbeat With The Baby Both Times. She Has Another Appt Next Week & The Thought Of Losing Her Baby Is Deepening Her Into A Serious Depression. Is It True That In Some Cases The Baby's Heartbeat Might Not Be Heard Until 9-10 wks? Did I Mention She Has A Tilted Uteras. She's Not Ready To Give Up Hope Just Yet Wut Should She Do??? Anyone Have Answers???