Feeling lost

Alright so a bit of backstory.

Me and my GF have been together roughly 12 years but exactly 2 weeks and 2 days ago she told me she was unhappy and depressed and needed to be alone to figure stuff out etc so she moved back home to her parents (we own a house together).

At first I made all the typical errors I’ve now come to learn about such as begging, pleading and bargaining – she rebuffed my advances and seemed determined that things just aren’t meant to be between us.

I told her after about a week of bargaining and trying to smooth things over that I respect her decision and I’ll let her go – I then initiated no contact which lasted 2 days before she reached out to me and messaged me asking if I was enjoying the sunshine. I tried to keep it short and mirror her in my replies and eventually we were typing pretty long messages with emojis etc

Stupidly (maybe) I broached the topic of reconciliation at which point she dug her heels back in and said she can’t come back and she needs space.

Over the past week or so, she has reached out every so often, usually when she’s having a wobble and feeling a bit ‘down’ about stuff – I then talk to her and reassure her and she goes back to ‘I’m not coming back I need space’

So today finally I just decided to tell her ‘I also need space now to work on myself and move on’ and I blocked her on everything so she can’t get hold of me and I can’t reach out to her easily too.

I feel as though she was using me as a kind of comfort blanket whenever she felt unsure and as soon as I soothed her she would be fine to continue getting over me – which obviously isn’t cool.

I’m just so lost right now and feel sick – am I doing the right thing?