Rekindling relationship with old friend...

I haven't been on TSR in ages, but I need some help...

In 2007, I spent six months studying abroad and made a friend who was literally the best friend I ever had - we were 13 years old and we were super close, and I missed her so much when I had to go back home.

We stayed in touch, and she ended up coming over to the UK and living with my family for a couple of months, because things got really messy for her at home (criminal brother, depressed mum, and my friend started self-harming as well), but she was too far gone, and even though we tried to take care of her, her attitude stank and I ended up feeling like she was taking advantage of my mum's good will, so after she went home, I ghosted her and we haven't spoken since.

Today, we were visiting the town where she lives, and my mum saw in the shops - my mum said my friend looked really well and was really friendly and excited to hear that I was in town...

My dilemma is that I don't know whether to message her and ask to meet up, or just let it go. Now that I'm an adult, I feel bad about having disappeared when she was going through such a tough time (even though I wasn't equipped to deal with it back then) and I would love to catch up with her, but on the other hand, I don't want to risk getting sucked into any drama...?


Tldr: 15 years ago, I ghosted my best friend because I couldn't handle what she was going through, and now I don't know whether to meet up and rekindle our friendship?