[at_a_remove]

Meowing is definitely a "please parent me" behavior. It took quite some time to domesticate two feral cats that were nearby -- many years. The meowing reflex was not present until much much later. One cat would open her mouth but forget to make the sound, but she eventually caught up to her brother, who would correct her by looking at her and meowing if she forgot.

[t-3]

It's possible she was making high-frequency noise beyond the detection range of the human ear. I've read that cats use these kinds of noises for calling their kittens.