Connecting with birth mother

Started taking to a potential birth mother to adopt her child. She is very in her pregnancy and just wants to communicate through text. Our first time talking we texted for five hours and i really thought we connected. I texted her the next day and didn’t get a response. Should i continue to contact her or should i wait for her to reach out? Not sure what to say so i dont want to bother her or seen annoying but also want her to know we’re thinking of her. Any advice??