If grandmother take care BB, I will see her every night.
Suggestion....May be tell your mother go to your home to take care BB everyday. And night time by yourself. BB will be closely with you if you can spend more time to take care.
i grew up with my aunt, mom take me back on sat and sun.
I must say i am closer to my aunt than mom (she gets jealous of it), and also after i move back when i was around 10+, I didn't like it at the start cos house rules and way of living is very different.
Also, now when I grew up, I can sleep in the dark alone, cos when I was young my parents always trick me to go to bed and they will leave then, so I am very insecure at nite and also afraid of dark.