This is a very chilled out read, which can indeed be engaging. However, maintaining an emotional connection throughout the performance is key to keeping your audience engaged and conveying the full depth of the narrative.

It sounds like your performance starts strong with a smile, which suggests a fondness or warmth when recalling Mrs. Nillimore. Yet, as that smile fades, the emotional connection seems to waver, which might cause listeners to feel a disconnect. To enhance your delivery, try to sustain that emotional presence throughout the read. If there are shifts in emotion, such as from happiness to sadness, ensure these transitions are deliberate and clear to the listener.

If you aim to convey sadness, amplify this choice more distinctly. Let the tone of your voice, the pace, and the volume contribute to expressing this emotion. For example, your voice could soften and slow down to reflect somberness, which contrasts effectively with the brighter moments where your voice might naturally lift.

Continuing to work on these emotional transitions and maintaining consistency in your emotional expression will not only make your performance more compelling but also more authentic. Keep exploring the depth of emotions associated with your memories of Mrs. Nillimore, and allow your voice to reflect these nuances throughout your narration. This approach will help you create a more engaging and emotionally rich experience for your listeners.