I can see this is going to sound petty but hear me out.
I live quite far from my family and usually visit every 3 or 4 months.
Up until recently either I would call my mum or she'd call me at least once a week.
I noticed we hadn't spoken for a couple of weeks so I rang and we chatted and everything was fine, this happened a few weeks in a row so I left it and thought I'd wait for her to call me as it's always me ringing lately, anyway she didn't so I called her again and now it's been well over a week and she's not called.
Do I just keep calling her to maintain contact or do I leave it knowing she may never ring me again?
It feels very one sided and I had always thought we were very close.
When I do speak to her we get along really well and have a lovely chat, I just don't know why the calls have become less frequent and only if I ring her now.