Friend always sends me a WhatsApp along the lines of “how are you”. I respond usually with 24 hrs, usually quicker just whenever I get chance. She then doesn’t reply for about 7 days and says oh sorry I forgot. Every time. Even once recently when I had some sad personal news - nothing for 7 days. This has happened consistently for months now. Recently I didn’t bother to reply - still got another one after 7 days or so. She’s in a group chat with some other girls too and generally doesn’t engage in the chat much/ at all (except to send photos of DC) so I feel rude not replying when she can see I’ve been chatting in that. Is this some weird power thing about getting me to reply to then ignore me? Just finding it all a bit odd…