Is it a recent change?
If recent change, then maybe she is going through a wonder week?
I think you need to try to get her down as soon as you see any tired signs. Give her no chance to yawn again.
Have you tried putting her to sleep in her normal bassinet and using a monitor?
I'm sorry. In going to go against the grain. 9 hours is not enough sleep for a baby. She may be really overtired. She may be just waking up a bit and searching for you more.
Otherwise have you tried putting her in the pram, and going for a walk??
Gotta do what you gotta do.
I hope you get some sleep soon. Good luck. It's an exhausting time. Things should settle for you though.