Should I text the girl I saved from a creepy interaction? I want to be respectful and give her space but my gut is urging me to text her. What do you think

Last night I (33M) was walking home from the convenience store around 10:30 PM when I noticed a woman a little ways ahead of me. At first I didn't think much of it, but then I saw a guy who'd been lingering near the bus stop start following behind her. He wasn't just walking the same direction either. Every time she crossed the street or slowed down, he did too.

She didn't seem to notice him at all because she had earbuds in and was looking at her phone. I sped up a bit and caught up to her. I quietly said something like, "Hey, I don't want to alarm you, but I think the guy behind you has been following you for a few blocks. Just keep walking with me."

She looked confused at first, then glanced behind us and immediately got nervous. I started making casual conversation like we already knew each other, and after another block the guy eventually turned around and walked away.

We happened to live only a few streets apart, so I walked with her until we got to my house. She kept thanking me over and over and said she honestly hadn't noticed the guy at all because she was distracted.

Right before she left she gave me her number because she wanted to stay in touch and maybe repay me with coffee sometime. I'm so nervous to text her, I want to be respectful and give her space but at the same time I definitely DO want to see if she's ok and if she wants to, meet her again.