I'm new to the game so rat morphs still confuse me. Lol rats are rats to me. Yeah if she is spotting then she will probably have them tonight. I can tell a difference in size with mine since yesterday. So who knows both of our rats liable to give birth tonight.
I know the research I did said that rats usually give birth at night. Well I happen to walk in/check on her but momma 1 gave birth between 2-3pm on 9/10/11. Atleast I got to witness the last half of labor. But good luck.