How do I change the value of a textarea when using a reuseable component?

I need to change the text within a specific component's textarea when requirements are met from entering text into a different components textarea. I've tried to create a simple example to show the issue. my main issue is targeting the correct component and editing its text that shows up dynamically.

Parent Component

<template>
    <reuseableComponent 
        input-type="textarea" v-model="Example1">
    </reuseableComponent>
    <reuseableComponent 
        input-type="textarea" v-model="Example2">
    </reuseableComponent>
<template>

Reuseable Component

<textarea
    v-model='taValue' @input='$emit("input", taValue)'>
</textarea>

exampleMethod() {
    if(value) {
        //change text in Example2 textarea instance.
    }
}