Hi Lisa!
Yes, she will cry/scream is she is overtired. I think my A time needs to be really short (50 minutes then start the wind-down). Otherwise, she gets very upset when I put her down. I just keep sh/patting through the crying while she is in her crib. At the beginning, I tried picking her up but she continues to cry. So, I don't bother anymore. Hopefully, in the long run, this will help her self-soothe.
If I get the A time right, she will be asleep in 20 minutes with just a little bit of crying at the beginning. If I keep her up too long, it will take at least 30 minutes, sometimes 45, with a lot more crying.