How do I deal with an overbearing neighbour?
I recently moved to a new area, the day I moved neighbour saw me carrying stuff in and introduced themself and told me a wee bit about the area. All very nice and normal interactions.
Pretty much since then it's like I have a stalker:
-She found me on social media, where I don't use my name, and now messages most days
-Invites me round for coffee, lunch, dinner at least weekly
-I can't go into the garden without her being there immediately and wanting to chat even if I've just been out pegging washing/putting bins out/it's raining
-Messages as soon as I get home as she can see my car arriving. Usually just inane chat, this is when she usually extents the invites to pop round
-I worked overtime a few times and she messaged to see if I was ok as I wasn't home at the usual time and she was worried 

I've tried ignoring messages. Telling her I'm busy and can't chat. Declined invitations and just been a bit standoffish but it's not working.
Today I came home from work and was having a wee nap on the sofa. She saw me as she walked past and knocked the door to check I was ok 
It's getting ridiculous I just want a normal polite neighbourly relationship