In just two lines, this poem captures the sting of watching someone you relied on give their care to another person. The speaker says "you used to save me," which suggests the other person once acted as a kind of lifeline, perhaps comforting or steadying them when things were hard. Now the same person is "saving her," and the speaker is left on the outside, watching.
What stands out is how little the speaker says. There's no outright accusation, no angry outburst. The repeated word "saving" does the work, setting past and present side by side so the loss feels obvious. The shift from "used to" to "now" marks the change cleanly.
The mood is quiet, hurt, and a little resigned. The speaker may feel jealous, abandoned, or simply sad that they were once needed and no longer are. The bare, lowercase style makes it feel like a private thought that slipped out, which adds to its raw honesty.