Saadia I must have missed them 
Congratttttttts 
I think your daughter may need some alone time with you, without the baby…a couple of hours, just the both of you lying down on her bed, reading, or watching her favorite show, with you telling her how much you love her and need her to help out.
My older one was 3.5 yrs old when choti came along and she went through a couple of weeks of extreme insecurity. She would hide and cry cry cry or she would howl for attention and throw tantrums. I too felt like I was giving her enough time but I guess she needed just a bit more.
A couple weeks and she was the nicest big sister. She just needed reassurance.