Dubai sends text messages back to China.

I think I got it.

Or you can ask her to use China's mobile phone to start international roaming. Send China's mobile phone directly to China's mobile phone. In fact, the cost is similar to Dubai's mobile phone to China.

And if you send it to her, the cost is still cheap (according to the cost from China to China, she doesn't have to spend money to receive text messages).

Or you can ask her to send you a letter by airmail directly from the Internet.