Feral cat missing for 2 days

I have a small colony of 4 cats. A mom and her three 1 year old kittens. 2 girls and a boy. The mom and girls are spayed the boy I haven't been able to trap yet. The cat misding is named Brooke. I got her spayed 1 month ago. While I was transporting her in the carrier after her spay it came loose and Brooke ran off. I looked for 2 long weeks for her and posted signs and ran ads. Miraculously she managed to find her way back to where she lives almost 2 miles away! For the past 9 days Brooke has been at the feeding station waiting to eat. However yesterday and today she was not there. Any thoughts. The other cats have disappeared for a few days but rarely Brooke. I woukd,appreciate any input. I'm a worried feral momma. Thank you.

i think during her 2 mile trek she discovered places she likes to visit, 

She may be wondering around, can you go out at dawn and dusk and shake a container of dry food and see if she'll hear you and come out to eat? Hopefully she won't be gone too long.

Thanks for the input. These cats have occasionally disappeared for a few days but eventually show up. Maybe she's just wandering around like you said.