What is a good way to say thanks for the welcome message?

Most welcome messages are light on purpose. She's saying hello without committing to anything, and the question at the end is usually there so you have something easy to answer. Read it as a friendly gesture rather than a test. If she asked how your week is going, that's the real hook, and it tells you what kind of reply will land. Acknowledging the greeting and answering the question is nearly always enough. Her profile can add a second thread to pull on, such as a place she mentions or a hobby, but you don't need to dig for it in the first reply. The point is to show you're present and pleased she reached out, not to prove you noticed every detail on her page.

The best replies here do two things. They acknowledge the welcome in a sentence, and they answer her question directly, then add one small detail about your own day so she has something to react to. A reply that only thanks her gives her nothing to say next. A reply that answers and adds a small detail makes it natural for her to respond. Keep the answer brief and concrete. Avoid anything that reads as a speech, and avoid turning the reply into a question you're asking her back in the same breath unless it's easy to answer. One clear hook is enough. You want the exchange to feel like a second turn in a friendly chat, not a form you're filling in.

After you've replied, the ball is in her court. Give it a reasonable window, usually a day, before you decide anything. If she answers, match her length and energy and keep the thread moving with one new thing at a time. If she doesn't reply, don't send a second thanks or a "just checking in" message. A quiet match at this stage is common and usually says nothing about you. If you want to try once more, wait a couple of days and send something that adds a new detail rather than repeating the first message. If that also gets no answer, let it go and move on without taking it personally.