How to double text after 2 days without looking desperate

A 2-day gap is not a technical glitch or work stress. She had her phone. She saw notifications. She chose not to reply. This tells you her interest level dropped after your first message, something else took over, or she is waiting to see if you persist. None of these scenarios improve by pretending the silence didn't happen. Your second message needs to work on its own merit. It can't reference the delay or it signals that the silence got to you. She already knows 2 days passed. Pointing it out makes you seem anxious about it.

Send something short that gives her an easy entry point back in. A question works better than a statement because it invites her to respond without requiring a long answer. Skip the emotional labor. Don't mention a shared memory or inside joke if the first exchange was light. Keep it light again. The message should feel like you texted a friend, not like you're auditioning for her attention. If your first message was a question, your second can be a different question or a simple observation that leads to one. It should take her 15 seconds to decide whether to reply.

After you send the second message, give her a full day minimum. Two days of silence already happened. A few more hours won't kill you and it keeps you from looking reactive. If she replies, great. If she doesn't reply after 24 more hours, you have your answer. A woman interested in you will respond to a light, easy message within a day. If she doesn't, a third message does not change her mind. It only confirms for both of you that the spark isn't there. Respect that and move on to someone who is actually texting back.