Bottle baby wants bottle after spay

So our little Teddy girl got spayed on Wednesday. It went pretty well. She was a little hissy and growled when her brothers got too close so we separated her the first night and last night just in case. The boys can get a little rowdy.

Anyway, she has been screaming at me obviously wanting something and I finally figured it out - she wants the bottle. She was sooo happy when I gave it to her and immediately calmed down and went to sleep.

She’s about 9 weeks old and just over 2 pounds. Looking for any advice or information on the bottle feeding and separation. TIA!