Hi S.
I don't know what you expect from your 10 month old, but it seems that she is sleeping. How close is she to you? If she is in your room still. It is time to move her to her room. If she is in her room on the other end of the house and you can hear her without mechanical devices perhaps she needs you. Security is important too. If it is because of the mechanical device. Why not shut it off? She can certainly cry loud enough at 10 months for you to hear her.
Our son didn't sleep at night. In fact by the time he was a year old he was only sleeping 2 hours in 24 hours. He slept from 8 - 10 PM every night then ran from the head of my side of the bed around to the head of daddy's side of the bed. MD said that was perfectly normal for him because he was not in sleep deprivation, and growing etc. This continued throughout his life. As he got older and we could reason with him, he played cars, built houses, and at 3 read books in his bed. Yes, he was reading at 3 and by K, he was reading on a 5th grade level. In first grade we sent him to private school, where he tested in 5th for all subjects, but finished 5, 6, 7, and 8th grade curriculum that year. He is a lawyer today for the US gov. Obviously, it did not hamper his brain development.
We finally figured out that just because I needed more sleep than some of my children, it did not mean they were not getting enough. Every child is different and must be dealt with individually.
God bless you
Talk to your mom, she too may have stories to tell
K. -- old enough to be your mom, SAHM married 38 years, kids 37, 32(story is about him), and twins 18years(one of them sleeps about 4 hours in 24). The other two sleep 10 hours in 24, and need that much sleep even now.